The Form That Does Not Withdraw

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Axis 1 — Destruction of essentialism

1.1 Genealogy of essentialism: from Plato to the cosmos-object

The Western tradition that goes from Plato to Aristotle and then to medieval scholasticism has progressively crystallized a way of questioning the multiple and the transitory. This is not Plato's invention — the fixation on stability and unity is prior — but it is in Plato that it takes on an articulated form, and in Aristotle that it becomes a binding doctrine for two millennia of European thought.

In Plato, the problem is this: the sensible world presents multiplicity and change — there are many horses, many beauties, many righteous acts, and each of them is born, changes, perishes. However, the mind can understand what a horse is in general, beauty in itself, justice as such. Therefore, there must be a level of reality where these simple, eternal, immutable units exist. Platonic Forms are not mere concepts, practical generalisations that the mind extracts from particulars: they are subsisting realities, prior to particulars, which they imitate or participate in. Sensible multiplicity is ephemeral; intelligible unity is eternal. Now, here lies the first sign of instability. The very argument that establishes the Forms generates a problem that Plato identifies — the so-called "third man" argument. If the particular horse participates in the Horse Form, and if participation requires similarity (for the particular must resemble the Form in order to participate in it), then this similarity is itself a common characteristic of the particular and the Form. However, then there is a second Form — Likeness — which is participated in by both. And if this pattern repeats itself indefinitely, the unique and stable foundation is never reached. The mechanism that should anchor everything in an eternal essence produces, on the contrary, an infinite regression. The essentialist doctrine appears to be internally fractured from the beginning: the strategy of basing multiplicity on a simple unity reveals itself, when rigorously examined, to be incapable of closing its own discourse.

Aristotle reformulates the problem. He rejects Platonic dualism — the Forms are not separate from the sensible world — and integrates form into individual matter. The particular (the concrete horse I see in the field) is a composition of matter and form (hylemorphism). Form is what makes matter intelligible, what makes it what it is. But this means that form becomes the cause of identity: matter, by itself, has no determination. Matter is passive power — pure capacity to receive form. Form is what gives matter the capacity for existence. This model has precise cosmological consequences. Aristotle's De Caelo describes a finite, spherical universe, hierarchical in concentric spheres, with a fundamental distinction between the sublunary world (where the elements change: earth, water, air, fire) and the supralunar world (where the fifth essence, the ether, incorruptible and immutable, reigns). This structure is not contingent — it is not the result of particular material relations that could be different. It is an expression of a formal necessity: each element seeks its natural place in the cosmos, each sphere has its prescribed function. The true form of the universe is this hierarchy, this order where each thing occupies its place according to its substantial nature.

The cost of this doctrine is invisible but decisive: matter has no form of its own, no capacity for self-organisation. Every form comes from outside, every determination is the imposition of an essence on a passive substrate. The richness of movement in the material world is, consequently, reduced: change is a mere displacement of powers in action according to pre-established forms. The new is impossible; there is only a rearrangement of what was already inscribed in nature.

Medieval scholasticism incorporated this hylomorphic logic and applied it on a cosmic scale. Every being has an essence — that which answers the question "what is it?" — and this essence is distinct from existence (in Thomas Aquinas, existence is added to the essence, it is grace, it is contingency; but the essence remains the stable nucleus, the form that does not vary). God is the only being in which essence and existence coincide; everything else is composition, therefore derived, contingent, but ordered according to a plan of essences. The universe is cosmos because it is intelligible: because the forms are predestined, organised, inscribed in a divine intellect that thinks them before creating them.

The modern dissolution of this edifice is often narrated as the discovery that things have their own movement, intrinsic dynamics — and this is true. However, the narration omits a crucial point: modern science has not abandoned essentialism, it has displaced it. Descartes rejects Aristotelian substantial forms, natural places, hidden qualities. Matter is homogeneous, inert, governed by mechanisms — collisions, local movements, mathematical laws. But these laws are eternal. Cartesian mechanism replaces Aristotelian forms with a new type of form: immutable laws that govern inert matter from the outside. Matter continues to be a passive receptacle; only the type of determination has changed. Newton takes this scheme to the extreme: absolute space, absolute time, the three laws of motion — all of this is form that persists, necessary, independent of any particular material configuration. Newtonian dynamics describes the universe as a machine whose fundamental structures are immutable.

19th century thermodynamics introduces entropy, asymmetric time, irreversibility — there appears to be real change. However, the essentialist interpretation persists: the "laws of thermodynamics" are eternal forms that govern how energy dissipates. The second principle is proclaimed as the fundamental law of the universe, a necessary truth about how things should behave. There is a clear migration here: when substantial forms are abandoned, when natural places disappear, when hylemorphism collapses, essentialism migrates to new territory — the laws, the constants, the principles. These gain the status that Aristotelian essences had: they are prior, necessary, transcendent in relation to the material flow.

The cosmology of the 20th century inherits this structure and reproduces it. General relativity shows that space and time are not inert containers but relational dynamics — and here is the first real crack in essentialism. But quantum mechanics, in many of its interpretations, reintroduces the essential form under a new name: the "quantum state" as fundamental reality, the wave function as a complete description, the probabilities that govern collapses as eternal laws of nature. And when contemporary cosmology postulates a "ground state" of the quantum vacuum — that point before which nothing existed, where the essential structure of the universe rests — it reproduces, without recognising it, the same strategy that Aristotle used: seeking a level of reality where form ceases to be contingent and becomes necessary, where change ceases.

What this path reveals is that essentialism is not a specific thesis about what types of forms exist (Aristotelian substances, Cartesian laws, quantum states), but a structural operation: always seeking, beyond the multiple and transitory, a level of reality where the form is one, eternal, immutable — that which "truly is", as opposed to that which changes and perishes. Essentialism is the expectation that there is a final level where intelligibility ceases to be a relationship with the multiple and becomes the apprehension of something simple and necessary. This level is never reached, because it does not exist. However, contemporary scientific research remains structurally guided by this expectation. The promise of a "theory of everything" is the promise of finally collecting the ultimate form of the universe, that form that cannot be collected because it does not exist.

1.2 The form as configuration: emergence, relationality, processuality

If form is not essence, observable forms must be thought of as transitory configurations of material relations in motion. This implies three solidary traits: form emerges, form is relational and form is processual.

The most obvious examples reside in astronomical structures. Consider the spiral shape of a galaxy. When you observe a spiral — the arms that seem to wrap around the core — there is a natural tendency to ask, "Is this a shape that persists, that moves along?" The answer is no. The spiral arms are density patterns, defined by the theory of Lin and Shu in the 1960s: they are zones where the concentration of matter is slightly higher. But matter does not move in the arms. The stars enter the arms on one side, slow down (because the density is greater there, so gravity is more intense), then accelerate again and exit on the other side. The spiral form is a density wave — a pattern that persists as long as differential rotation continues (the core rotates faster than the outer disks), but is made entirely of matter in continuous passage. The form is not an object that moves; it is relational conformity that is maintained because the dynamic conditions are maintained. If the differential rotation ceased, the density wave would disappear. The form is entirely dependent on the relational processuality that produces it.

This example generalizes. Take stellar balance. A star is approximately spherical in shape — this is an indisputable observational fact. However, this form is not an intrinsic property of stellar matter, it is not "natural" to the matter from which the star is made. The spherical shape is the result of two forces in continuous tension: gravity (which pulls matter towards the centre, trying to compress the star) and radiation pressure (coming from nuclear reactions in the nucleus, which pushes matter outwards). As long as these two forces balance each other, the shape remains approximately spherical. But the balance is dynamic and unstable. As matter is consumed (nuclear fuel is finite), the temperature and pressure conditions in the nucleus change. Radiation pressure decreases. Gravity begins to dominate. The star contracts — changes shape. If the contraction is accompanied by an increase in temperature (under certain conditions), helium fusion begins and the pressure increases again, but now so intensely that the star expands. The shape changes again: the star becomes a red giant, a completely different configuration from the initial sphere. Later, if the mass is appropriate, the contraction continues and the shape changes again: white dwarf, an extremely dense and small configuration. Or, if the mass is large enough, complete collapse into a black hole, where the very notion of "shape" — of edge, of surface — loses meaning. The shape is not a property that the object possesses; it is the effect of relationships that govern how matter reorganises itself. When relationships change, the form changes.

This is radically different from the Aristotelian notion of form. For Aristotle, form is what makes a thing what it is — it is prior, essential, determining. For this perspective, form is subsequent to relationships, it is a consequence, it is an effect. Matter is not a "passive receptacle" that waits to receive form from outside; matter is what is relationally reorganised, and form is the pattern that this reorganisation takes at each moment.

Simondon offers a crucial mediation here, although the picture that develops here goes beyond its formulation. Simondon rejects Aristotelian hylemorphism — the notion of form and matter as two distinct realities that meet. It proposes, alternatively, that individuation (the process by which a unit emerges) is always a dispensation from energetic disparity that resolves an initial metastability. Form is not an imposed external standard; it is crystallization of tensions that exist in the system. This is very close to what is being described: the form is the emergence of relationships. However, Simondon works with the form/information pair (information is the disparity that allows the resolution of metastability), while here the picture is different. Here we work with material tensions — gravity, pressure, concentration differences, energy gradients — without invoking any informational terms. The form does not resolve a tension in the final sense; form is the way tension manifests itself in each configuration. Simondon speaks of a "pre-individual" — a reserve of potentials that individuation never exhausts, that persists beyond any constituted form and allows for new future individuations. Here we speak, in a similar way, of material excess: processes and energies that persist beyond any configuration that emerges. But not as "potential" in the sense of the capacity to be, the possibility of acting (as in Aristotle); as effective materiality that is not entirely captured or consumed by the form it momentarily assumes. The form is what the material excess leaves visible, makes legible, at each point of its processuality. Excess never ceases; therefore form is never rest.

Prigogine offers a decisive complement from the thermodynamics of far-from-equilibrium systems. Dissipative structures — configurations that remain stable only as long as the flow of energy that sustains them persists — demonstrate that form is sustained by instability, not despite it. A vortex in a water stream maintains its configuration as long as the flow persists; when the flow ceases, the form dissolves. The divergence with Prigogine is, however, precise: dissipative structures require external flow — they are open systems that maintain organisation by importing energy. The argument here is more radical: the instability that sustains the form is immanent to the material reality, it does not depend on an "exterior" that provides flow. The cosmic form is a transient configuration sustained by immanent excess, not by dissipation dependent on external flow.

1.3 Cosmic forms as transitional equilibria

Whether a form emerges, and when, depends entirely on specific material conditions. This does not mean that the form is arbitrary or indeterminate; it means it is contingent — it might not emerge if conditions were different. Several examples illustrate this principle.

Consider the formation of stars from molecular clouds. A molecular cloud is an accumulation of gas (mainly hydrogen) and dust distributed more or less homogeneously in intergalactic space. Gravity acts on all mass — this is a universal force. However, gravity alone is not enough to make the cloud collapse. Thermal pressure (the kinetic energy of particles) resists contraction. The cloud remains relatively stable as long as the balance between gravity and pressure is maintained. However, there is a critical threshold — the Jeans mass — above which gravitational contraction dominates thermal pressure. If a region of the cloud contains mass greater than this threshold (which depends on the temperature and density of the cloud), that region collapses. The form does not exist before: there is no "star" hidden in the cloud waiting to reveal itself. Form emerges when mass crosses a specific threshold, when the relationship between forces changes. As the collapse proceeds, the density increases, the temperature rises, the pressure increases, and eventually nuclear reactions begin. A new form emerges: the star. This shape was not necessary — other clouds may not have sufficient mass, or may have been dispersed by radiation shocks before collapsing, or may have fragmented into multiple smaller regions. The form emerges or does not emerge according to the contingency of conditions.

Once the star exists, new instability defines its subsequent fate. The Chandrasekhar limit is an extraordinary fact: above a certain mass (approximately 1.4 solar masses), the electronic degeneracy pressure — the pressure that results from the fact that electrons cannot occupy the same quantum state (Pauli exclusion principle) — is insufficient to support the star against gravity. The white dwarf (the shape a star takes after consuming its nuclear fuel) can only exist below this threshold. Above it, the contraction continues indefinitely — either until nuclear degeneracy pressure takes over (in neutron stars), or until complete black hole collapse occurs. The shape a star ultimately takes is not determined by some hidden "nature" of matter, but by a figure — the ratio of the initial mass to the Chandrasekhar threshold. It is pure relational contingency: a star of 1.3 solar masses will become a white dwarf; one of 1.5 will become a neutron star. The difference is small, but the final form is radically different.

The galactic merger offers an equally compelling example. Two spiral galaxies approach each other — this is because nothing in the universe is truly isolated, galaxies have speeds, galaxy clusters exert mutual gravitational attraction. When the first galaxy passes through the gravitational field of the second, gravitational tides distort both. The spiral shapes fall apart. The orbits of the stars are changed. The interaction is violent and chaotic. But then, eventually, the dynamic stabilises. The two masses coalesce. The shape that emerges is completely different: an elliptical galaxy, where there are no spiral arms, where the light distribution is approximately symmetric and three-dimensional. The spiral shape is not the "true shape" of a galaxy that eventually becomes corrupt; both are contingent forms that emerge from specific material relations. The spiral emerges and persists as long as the thin disk and differential rotation are maintained. The elliptical emerges when two rotating structures collide and their orbits become entangled. What is the "true shape" of a galaxy? Neither is true in a privileged sense; both are real according to the conditions that produce them.

The same occurs at the molecular and crystalline level. Water can exist in multiple crystalline forms (ice allotropy): hexagonal ice, cubic ice, amorphous ice, and even other strange forms under extreme pressure. Each shape corresponds to a different arrangement of water molecules — different geometric pattern of bonds between hydrogen and oxygen atoms. The shape depends entirely on temperature and pressure. At atmospheric pressure and temperatures below 0 °C, the hexagonal shape is stable. However, at extreme pressure, the molecules rearrange themselves, and a completely different form emerges. Iron offers an even more dramatic example: at room temperature, iron has a centred cubic structure; when heated above 912 °C, the structure changes to face-centred cubic; above 1394 °C, it changes to centred cubic again; above 1538 °C it becomes liquid. Each crystalline form has different properties — hardness, electrical conductivity, magnetic response vary radically depending on the atomic configuration. The shape of the iron is not the "nature" of the iron; it is contingency of thermodynamic conditions. If you change the temperature, the shape changes. If the shape is changed (by rapidly cooling certain types of steel, for example), the properties change. Form is that which results from specific material processes; it is never rest or essence.

All these examples converge: form emerges when material conditions reach certain thresholds. The form persists as long as these conditions remain. The form transmutes when conditions change. There is no privileged form that is "true" or "essential"; all forms are transitory, dependent on relationships that continue to be processed. The universe has no essential form because there is no level where relationships cease. Material procedurality is constitutive, it is not an aspect that could be removed if it could be accessed "properly". The universe, therefore, is not an object with a form that could be collected and described completely. It is a continuous movement from which forms emerge, transiently visible while the relationships that produce them last.

1.4 Transition

What emerges from this analysis is a proposition that dissolves the foundation on which all essentialist metaphysics rested: no form is permanently guaranteed. Every form, however stable it may seem, carries within it the potential for transformation. Stability is not a fundamental property of the real; It is an exceptional regime that persists only as long as the tensions that produced it remain in a particular configuration.

This does not mean that reality is chaos or indeterminate flow. The forms are real, the conformities are real, the balances are real. But its reality is not that of immobile essences; it is that of material processes whose persistence depends entirely on the continuation of dynamics that no form can absolutely control. A spiral galaxy is as real while it exists as anything that claims eternal essence. Now, its reality does not guarantee its permanence. It is precisely this lack of commitment — this absence of guarantee — that allows the universe to continue to reorganise itself, that preserves the real from all the rigidity that essentialism has always sought to impose on it.

The consequence that opens up for the following chapters is radical: if no form is an essence, then the universe cannot be an "object" with intrinsic properties that define it. And if the universe is not an object, then also the question "what is the origin of the universe?" turns out to be poorly formulated — because the "origin" is also not a form of essence, but a transformation between conformities.

Aphorism of transition: The stellar form does not wait in iron for permission to collapse; it is the iron that reveals how provisional the form was.

Axis 2 — Universal Instability

2.1 From metastability to constitutive instability

The Western philosophical tradition has privileged being over becoming. From Parmenides to Plato, from Aristotle to scholasticism, the fundamental question was: what remains? What remains beyond the apparent changes? The response was unanimous — although diverse in formulation. Being is stable, eternal, self-sufficient. Becoming is accident, shadow, illusion. Until late modernity, the theory of knowledge worked on the conviction that change was a sign of ontological imperfection.

Contemporary science has reopened the question by inverting the terms. You no longer ask "why do things change?" as if the change were an exception to be explained. Ask yourself: "Why do they seem stable?" — and the answer reveals that stability is always conditional, always provisional, always an extraordinarily fragile balance held against its own dissolution.

To think about this inversion without returning to the indeterminate becoming of the Greek tradition, a concept is needed that retains the difference between pure chaos and determined change. Gilbert Simondon offered this concept: metastability. A metastable system is not in equilibrium — in equilibrium, the system rests and no transformation occurs. Nor is it unstable in the ordinary sense — it does not collapse either way with the slightest disturbance. A metastable system is one loaded with potentials, suspended in a configuration that retains energy and tension without dissipating them. It is "more than unity and more than identity", says Simondon — because its present identity already contains the seeds of other possible identities.

The classic example is the supersaturated sugar solution: it remains liquid, homogeneous, but a nucleation crystal, a simple vibration, triggers crystallization. The solution did not know it would be crystal — the information wasn't inscribed. But the potential was there: the material difference between the present state and the crystalline state constituted an unresolved tension. Metastability precisely names this condition: the system carries out a configuration among many possible ones, with no guarantee that the current one is the most stable or the definitive one.

Ilya Prigogine developed this thought through the theory of dissipative structures and bifurcations. Far from equilibrium, when a flow of energy passes through an open system (such as a convective cell in heated fluid, or an oscillating chemical reaction), the system approaches a bifurcation point. At this point, the dynamic trajectory splits: the system can evolve into an A attractor or a B attractor. The bifurcation is, in principle, indeterminate — the smallest fluctuation can decide the path. However, once a branch is chosen, the system is consolidated in that state. History matters: the fork is not repeatable. Contingency is radical, irreducible to previous determination.

What Simondon and Prigogine allow is to radicalise a thesis: metastability is not a property of special systems. It is not an occasional regime in which certain systems find themselves unluckily. It is the constitutive condition of the material real. Every particular configuration — and this is central — creates an arrangement between unexhausted potentials. The apparent stability of a rock, an atom, a star, is the result of material constraints that retain certain possible transformations within a horizon long enough to appear fixed. However, "long enough" is always relative. Uranium appears eternal to the human eye (half-life of 4.5 billion years); in the eyes of the universe it is ephemeral.

The consequence is simple and radical: the question "why do things change?" is a bad question. The correct question is "why do they seem stable?" — and the answer is: because the material constraints that sustain them have not yet been overcome. Instability is no exception that theory must repair. It is the universal regime of which stability is a particular, conditioned, contingent case.

#### Genealogy of being and becoming

The distinction between being and becoming has structured all of Western metaphysics since the pre-Socratics. Parmenides established the foundation: being is immutable, eternal, indivisible; non-being is not and cannot be thought. From this position follows an ineluctable consequence — if being is, any change would be a passage from being to non-being or from non-being to being, both of which are impossible. Change, therefore, is an illusion of the senses. This picture endured through medieval scholasticism, which identified being with substance — the form that remains identical with itself through varying accidents. The substance is eternal, incorruptible, the nucleus of permanence in a world of changes.

The modern inversion of this genealogy was not philosophical but physical. Carnot and Clausius founded thermodynamics by demonstrating that every irreversible transformation implies an increase in entropy: energy is neither created nor destroyed, but is reorganised in a unique direction — from ordered to disordered, from concentrated to dispersed. This is not a metaphor: it is a measurable property of the material reality. Boltzmann later showed that this temporal asymmetry emerges from statistical considerations about particles in chaotic motion. When enormously many particles move, the probability of them remaining spontaneously organised decreases exponentially over time. Order is the exception, disorder is the rule. Quantum mechanics completed this reconfiguration: indeterminacy is constitutive, not a defect in knowledge. A particle has no defined trajectory before measurement; exists in a state of superposition. The real material is, from its most fundamental level, devoid of fixed determination.

In this context of thermodynamic and quantum irruption, Simondon offers a middle way between Parmenidean rest and Heraclitean chaos — metastability. A metastable system is one that can maintain a state indefinitely if undisturbed, but that contains the potential for transformation if a small variation causes it. The classic example is a saturated solution — a solution of a sugar in hot water can remain clear even when cooled below the normal precipitation point. Only a nucleation crystal or a vibration causes irreversible crystallization. The system is loaded with unresolved potential. Simondon describes metastability as "more than unity and more than identity" — the system is multiple, it contains unreconciled forces that subsist within it.

The distinction required here is precise: Simondon thinks of metastability as a relationship between form and information, in which the form is always susceptible to receiving new information, new contours of updating. In this pre-symbolic cosmic context, metastability is the occupation of reality by unreconciled material tensions, by conformities that are not exhausted in a single configuration. The Simondonian "pre-individual" is an ontological reserve of potentials; here it is simply material excess that goes beyond the limits of the present form, which resists enclosure. A particle is not determined; a star is not stable; a field setting is not rest. The real is intrinsically multiplicity wrapped up in each present.

Prigogine develops this intuition by showing how systems far from thermodynamic equilibrium produce ordered structures not despite irreversibility, but because of it. In an equilibrium system, molecules are distributed randomly, maximum entropy, no macroscopic order. When, however, energy flows continuously through the system, far from equilibrium, organisation emerges. A Bénard cell — a fluid contained between two plates, heated from below — remains at rest until a critical temperature. Once this temperature is exceeded, the fluid spontaneously organises itself into convection rollers, visible geometric patterns, macroscopic order within molecular chaos. The Belousov-Zhabotinsky reaction produces rhythmic chemical oscillations, colours that vary periodically, temporal structure in a system with no law that determines it a priori.

The required differentiation: Prigogine analyses dissipative structures in open systems, where entropy is dissipated outward while energy enters. The cosmos, however, is not an open system — there is no outside to dissipate entropy. Instability is immanent here, constitutive of the material fabric itself, not supported by external flow that permeates it. When Prigogine speaks of "cosmic creativity", he refers to the production of order through irreversibility; In this context, the same irreversibility is rooted in the fundamental structure of the material reality, not in an energy that is applied to it from outside. The consequence is disturbing: every form is provisional because the matter that constitutes it is metastable, loaded with potential, capable of reorganisation when this potential is actualised. Stability is not a property of the real; It is a rare exception, a state that rests on contained tensions, which wears out over time.

2.2 Instability at all scales

If instability is constitutive, it must manifest itself on all scales of matter. Not as an isolated accident, but as a universal property. This can be demonstrated starting with the smallest and ascending to the entire cosmos.

On the quantum scale, the "vacuum" itself — the state of minimum energy — turns out to be unstable. Vacuum fluctuations, predicted by quantum theory and confirmed experimentally, show that not even "nothing" is rest. Particle-antiparticle pairs are born and annihilate each other in infinitesimal time intervals, according to the uncertainty principle. The Casimir effect — the attraction between two conducting plates in a vacuum — demonstrates that these fluctuations exert measurable pressure. Lamb shift, the tiny difference between hydrogen energy levels, arises from interaction with fluctuations in the electromagnetic field. The "vacuum" is not inertia. It is a hotbed of ephemeral reorganisations.

On the atomic scale, radioactivity reveals the metastability of the nucleus. Uranium-238 decays with a half-life of 4.5 billion years — stable on a human scale, but doomed. Carbon-14 decays in 5,730 years — noticeable to the archaeological eye. Polonium-210 decays in 138 days — clearly unstable to biochemical eyes. Theoretically, a Grand Unification (GUT) series predicts that even the proton decays, with an estimated half-life of 10³⁴ years — a time so vast that it exceeds the age of the current universe by unimaginable factors. However, if the proton decays, then all ordinary matter, all the apparent stability of macroscopic structures, rests on a cosmic metastability. The entire universe would be, in this reading, a system in slow decomposition — not by imperfection, but by constitution.

On a stellar scale, the instability is visible and dramatic. A star like the Sun is in hydrodynamic equilibrium — nuclear fusion pressure in the core balances the compressing gravity. This balance is precarious. Fusion occurs in a cascade: hydrogen fuses into helium; helium into carbon and oxygen; carbon to neon; oxygen in silicon; silicon to iron. At each stage, the core contracts and heats up. However, iron is thermonuclear Maginot line. Melting iron does not release energy — it consumes it. When a massive star runs out of hydrogen, fusion slows down. The iron core accumulates. And then, in fractions of a second, the nucleus collapses. Density rises to nuclear densities. The temperature reaches one billion degrees. The supernova explodes. Heavy elements — cobalt, nickel, iron, carbon, oxygen — are widespread throughout the cosmos. The instability was no accident. It was a necessary consequence of the metastability of each previous stage.

Other stellar paths reveal the same trend. A white dwarf — the residue of a star like the Sun — is as dense as Earth packed into a planet-sized volume. In an isolated white dwarf, the pressure of degenerate electrons balances gravity. However, if the white dwarf accretes material from a companion star, the mass increases. At a certain point (the Chandrasekhar limit, about 1.4 solar masses), the electron pressure is no longer sufficient. Collapse is inevitable. The white dwarf explodes as a type Ia supernova — a cosmic event of extraordinary brightness that lights up galaxies.

Neutron stars — pulsars — lose rotational energy, emitting electromagnetic radiation. Theoretically, they will eventually stop rotating and cool down. Black holes, according to Stephen Hawking, evaporate through quantum radiation, albeit on a time scale that in many cases exceeds the age of the current universe. None of this, however, is an exception. It is instability unfolded on different temporal scales.

On a cosmological scale, instability is structural. The universe expands — and the expansion accelerates. According to observations of the cosmic background radiation and the luminosity of distant supernovae, the universe does not converge to a final state of thermal equilibrium. It continues to accelerate, dispersing galaxies, diluting energy density, cooling. All matter and energy in the universe is doomed — not in a teleological sense, but in a materially conditional configuration sense. The present configuration of the universe is not stable. It necessarily evolves into something else.

None of these instabilities are isolated. None are accidents of a fundamentally stable regime. They are manifestations of the same truth: every particular configuration achieves metastability. What appears enduring — rock, atom, star, galaxy — is only what slowly deals with its own constituent instability.

#### The vacuum and its fluctuations

Vacuum is not absence. This statement reverses centuries of philosophical intuition that saw nothingness as a simple lack of being. In quantum mechanics, the lowest energy state is not absolute rest but minimal agitation, permeated by fluctuations. Heisenberg's uncertainty principle establishes a fundamental limit: energy and time cannot be simultaneously known with arbitrary precision (ΔE·Δt ≥ ℏ/2). This implies that over sufficiently short time intervals Δt, arbitrarily large energy fluctuations ΔE are compatible with the laws. Virtual particle and antiparticle pairs emerge and disappear; the vacuum is an ocean of fleeting presence.

These fluctuations are not mere mathematical abstractions — they have measurable effects. The Casimir effect demonstrates this clearly. Two parallel conducting plates, close to each other in a vacuum, exert a force on each other, a measurable attraction. The explanation: in the space between the plates, only certain modes of vibration of the electromagnetic field are allowed (those that cancel each other out at the surfaces); Outside of the boards, all modes are possible. Radiative pressure imbalance manifests as force. The vacuum exerts pressure; nothing pushes. Likewise, the change in energy levels of the hydrogen atom — Lamb shift — is revealed when comparing energies expected by non-relativistic quantum mechanics with observation. The discrepancy arises because the electron continuously interacts with fluctuations in the electromagnetic field, with virtual pairs that emerge from the vacuum. Every atomic transition, every photon emission, is coupling with this floating substrate.

The ontological consequence is radical: there is no empty space, not even at a quantum level. The real is continuity of tension, field conformities, reorganisations of potential in perpetual exercise. What we call a "particle" is a localized disturbance in this continuous fabric. The vacuum is not an inert stage in which particles move; it is a generative matrix of ephemeral forms.

#### Radioactive decay and nuclear metastability

Instability reaches the nucleus of the atom. Radioactive nuclides do not remain indefinitely — they reorganise into configurations less charged with energetic potential. Three main modes manifest themselves at contemporary observational scales.

Alpha decay consists of the emission of a helium-4 nucleus (two alpha particles). A heavy nucleus like uranium-238 emits this particle and turns into thorium-234. The mechanism is quantum tunneling: the alpha particle does not have enough energy to climb the potential barrier that would confine it; however, there is a non-zero probability of finding her beyond the barrier, having escaped without ever having had the classical energy to do so. The real does not follow predetermined trajectories; crosses barriers in a reorganisation that does not require continuous transition.

Beta decay is the transformation of a neutron into a proton, with the emission of an electron and an electron antineutrino. The nucleus reduces its number of neutrons, increases the number of protons. The emission of the electron does not result from previous confinement; the electron is created in the act of transformation itself. This reveals that the distinction between particles is not fundamental — the real stuff reorganises itself into field modes, and what manifests as a "particle" is just unstable localization of energy in certain parameters.

Gamma decay is the emission of a photon when a de-excited nucleus returns to a lower energy state. The energy accumulated in the nuclear configuration is instantly dissipated as electromagnetic radiation. Each mode of decay is resolved instability — the excess energy that the present form cannot contain is expelled, and the system reorganises itself into a less charged conformity.

One theoretical possibility awaits verification: the decay of the proton itself. Grand unification theories (GUTs) predict that baryonic number conservation is not absolute, only approximately valid on energy scales close to ours. The proton would be metastable, with an estimated decay time of ~10³⁴ years. Experiments such as the Super-Kamiokande detector, underground tanks sensitive to signals of proton decay, have not yet detected this transformation. However, the possibility remains: if the proton decays, all baryonic matter, all known structure, is provisional. What appears to be permanent — the atoms that constitute bodies, mountains, planets — would only be metastable forms whose dissolution is a matter of a sufficiently large time scale.

#### The stellar scale: balance and rupture

Stars are systems whose history is a succession of provisional balances, each one exhausted when the fuel is consumed. A star like the Sun is controlled nuclear fusion — hydrogen in the core is converted to helium through fusion reactions that release energy. This process supports the star against its own gravitational weight. The radiative pressure of the core prevents it from collapsing under gravity; gravity prevents the star from dispersing. It is dynamic balance, not rest.

This balance ends when nuclear fuel runs out. A solar-mass star burns hydrogen for ~10¹⁰ years. When the hydrogen in the nucleus ceases, the nucleus contracts and heats up. When the temperature reaches ~10⁷ K, the fusion of helium into carbon-12 begins. The star expands and becomes a red giant. Again, provisional balance. Helium is consumed; the fusion of carbon into magnesium begins. Each new nuclear fuel releases less energy per unit of mass than the previous one. The burning time shortens exponentially.

The fusion chain progresses: carbon, neon, magnesium, silicon, up to iron-56. Iron is the tipping point — it has the highest binding energy per nucleon. Iron fusion does not release energy; consume it. When the core is mostly iron, fusion stops. Radiative pressure disappears. The core, now unable to support itself against its own gravity, collapses within milliseconds.

In this abrupt collapse, the density reaches 10¹⁴ g/cm³ or higher. The pressure is such that electrons are forced to combine with protons, forming neutrons. The nucleus becomes a neutron star — uncompressed nuclear matter so dense that a spoon would be as massive as a mountain. Or, if the nucleus is massive enough (more than about 20 solar masses), not even the neutron degeneracy pressure can resist it — the collapse continues all the way to the black hole.

This collapse is a supernova, one of the brightest explosions in the universe. The energy released in seconds is comparable to what the Sun will emit in its entire lifetime. The shock wave radiating from the explosion disseminates the elements produced throughout stellar history — the same elements that, rearranged into different configurations, will enable future structures. There is no teleology here; dispersion is not "for" anything. It is continuous reorganisation, potential to be updated, without an inscribed purpose.

#### The evaporation of black holes

Even black holes are not permanent. Stephen Hawking demonstrated that black holes emit radiation — not because something escapes, but because quantum fluctuations in the event horizon generate particle-antiparticle pairs, and one of the particles, falling inside, lets the other escape. The black hole loses mass. The evaporation time depends on the initial mass: a stellar black hole of 10 solar masses would evaporate in ~10⁶⁷ years; primordial black holes, if they existed, would have disappeared by now. No form is eternal. Instability penetrates even the most opaque, most apparently "final" objects in the universe.

2.3 Instability ≠ entropy: productive reorganisation

One objection is predictable: is not this simply the second law of thermodynamics — the universal tendency toward increasing entropy? Isn't instability just another name for degradation?

The confusion is understandable, but operationally harmful. Entropy is a statistical quantity: it measures the number of microstates compatible with an observable macrostate. The second law states that, in an isolated system, entropy increases on average. This means that systems tend towards states with more accessible microstates — states, therefore, more "disordered" in an informal sense.

However, this is a property of systems in equilibrium or close to equilibrium. The second law says nothing about systems far from equilibrium, which receive continuous energy flows. Nor does it say anything about the qualitative nature of the transformations. A ball falling down a cliff increases entropy (kinetic energy dissipates into heat when it hits). A gas cloud that contracts under its own gravity and forms a star decreases local entropy — the scattered cloud (high entropy) becomes a star (low entropy). How is it possible?

It is possible because the cloud is not an isolated system. It receives gravitational influence (whose entropic cost is postponed and distributed). Because contraction releases potential energy, which heats the gas and accelerates nuclear reactions — that is, the system far from equilibrium creates structure, reduces entropy locally, increases it globally. This is the basis of Prigogine's dissipative structures: order emerges by the dissipation of energy throughout the system.

What instability names is different from entropy. It names the material capacity for reorganisation, the property that every present configuration contains unrealized potentials, unresolved tensions, material differences in suspension. When a star collapses and explodes in a supernova, heavy elements (carbon, oxygen, iron, nickel) spread throughout the intergalactic cosmos. A common formulation says that these elements were "produced" by the supernova. This is misleading. The supernova did not "produce for" anything. The supernova was a brutal material reorganisation: what was confined to a nucleus was dispersed. The elements are material remains of this reorganisation — available, later, to constitute future clouds, future stars, future configurations.

Likewise: when a molecular cloud (vast, cold, sparse, high local entropy) collapses under gravitational instability (Jeans instability), dense nuclei form and heat up. Fusion begins. A star emerges. Did the cloud "produce" a star? No. The cloud reorganised itself. Gravitational metastability has been released. Nothing was teleologically oriented. The "seeds" of the star were not there beforehand, written on the plane of the cloud. There were material conditions — density above a threshold, microscopic heterogeneities that trigger accretion cascades. From these conditions a new configuration emerged.

Instability is, therefore, excess in exercise. The present configuration does not exhaust the real material. It contains energy, tensions, differences that were not absorbed by the current form. The real always goes beyond its present configuration. This is the opposite of entropic degradation. It is productivity — not in the sense of intentionality, but in the sense that instability enables qualitative changes, new arrangements, new conformities.

Absolute caution is necessary here: this productivity is not "progress." The elements disseminated by a supernova were not "made for" anything. They are not destined to coalesce into a new star system. They can disperse forever in a vacuum. "Cosmic creativity" — if one uses this metaphor — is not teleological. It is not intentional. It does not pursue an end. It is the effect of excess without intention, material reorganisation without an author, radical opening of possibilities without guaranteed harvest. The entire form that emerges through instability might not have emerged. All form that exists is contingent — possible, but not necessary.

#### Thermodynamic distinction: systems in equilibrium vs. far from balance

The second law of thermodynamics states that the entropy of an isolated system never decreases: in a natural transformation, it increases or remains constant if the transformation is reversible. This strictly applies to systems close to thermodynamic equilibrium, where all macroscopic variables can be described by a small set of parameters (temperature, pressure, volume). A gas enclosed in a container is equi-distributed; a hot fluid in a cold fluid homogenizes; every isolated system tends towards maximum entropy, state of minimum order, equiprobability of microscopic configurations.

The cosmos, however, is not an isolated system close to equilibrium. Its nature is continuous expansion. The Hubble scale, the wavelength of the cosmic microwave background, continually increases. The universe does not rest; it is in perpetual transition to states of lower average density. Simultaneously, local structure emerges — galaxies, stars, nuclei — while total entropy continues to increase. How is this possible?

The answer lies in gravitation. Gravity is locally anti-entropic. In a gas without gravity, the molecules are distributed uniformly — maximum entropy. In a gas subject to a gravitational potential, the molecules are concentrated in regions of lower potential — structure, order, apparent decrease in local entropy. However, the gravitational work done in concentration is dissipated as heat and radiation; the total entropy of the system (gas + radiation) increases. There is no violation of the second law. Concentration is possible because the system is not isolated — it is open to the expanding universe, which provides the context in which local order is compatible with increasing global disorder.

#### Excess as a motor: the overflow of the real

Instability, however, is a distinct concept from entropy. Instability refers to the ability of a system to evolve into qualitatively different configurations upon small disturbances. Entropy refers to the number of microstates compatible with a macrostate — the greater the entropy, the greater the number of microscopic arrangements that produce the same macroscopic behaviour. A system can have high entropy and be stable, completely insensitive to local disturbances. A homogeneous gas, maximum entropy, is in stable equilibrium — small local variations disperse quickly, the system returns to rest.

Instability is an expression of excess — the present configuration does not exhaust the material potential contained in the system. A supersaturated solution has high entropy — many microscopic arrangements of the ions in solution — but is unstable because the minimum free energy configuration is not the solution, but the crystalline form. Unrealized potential exerts pressure. A supernova is a cascade of instability in which the excess energy that the iron core cannot contain produces a collapse and explosion. A rotating galaxy is dynamically stable only as long as the mass distribution remains and the gravitational field does not vary abruptly. Introduce a disturbance — a close galactic encounter, tidal disruption — and shear instabilities can be triggered, bars of matter form, structure radically reorganises.

The engine is always this: the real is always already loaded with potential that the present form does not contain. This is not a deficit of order but a plenitude of possibility. Excess is not imminent ruin; It is a condition for change. Without excess, without metastability, the real would be absolute rest, complete determination, absence of becoming. Universal instability is the very index that reality is radically open, that no configuration is terminal, that materiality persists in continuous reorganisation.

#### Anti-teleology: radical contingency

This fullness of potential is not oriented. There is no "cosmic creativity" in the sense of unfolding from a previous plane. When a supernova disperses heavy elements — carbon, oxygen, silicon, iron — into surrounding space, there is no teleology in this dispersion. The elements were not created "for" future planetary systems. This is to confuse later history with the intention of the present. What happens is that the energetic excess of the collapsing core produces violent material reorganisation. The result is dispersion. That this dispersion, in subsequent sequences of gravitational accumulation, creates a context for future structures is a subsequent, contingent event, without inscription in the present dynamics.

Likewise, the production of dissipative structure — the Bénard convection rolls, the oscillations of the Belousov-Zhabotinsky reaction — is not "progress." The order that emerges is a direct effect of thermodynamic irreversibility, not a sign of movement towards better states. If the flow of energy ceased, the coils would disappear, the system would return to chaos. The structure exists only for as long as the conditions that support it persist. It is not acquisition; It is an ephemeral phenomenon of material dynamics.

Contingency is therefore radical. It is not contingency in the weak sense — the uncertain result of causes that could, in principle, be specified. It is constitutive contingency: material instability is rooted in the structure of reality. The real is not determined because it is quantum; the real is not determined because it is thermodynamic; the real is indeterminate because matter itself is constituted by non-necessary potential, by conformities that could be other without contradiction in fundamental laws. The origin of the universe does not tend towards anything. The transformations that the real undergoes are not steps on a pre-figured path. Each reorganisation, each collapse, each emission of radiation is an actualization of potential under specific conditions, without guarantee, without guidance, without purpose.

This is the universalization of instability: it is not a defect that the real is unstable. It is the very condition of its continuous existence, the reason why there is becoming and not simple permanence of the identical. The form never retracts, never returns to itself absolutely identical, because it is immersed in a fabric of potential that continually destabilises it, that forces it to reorganise itself. No configuration is terminal. No structure is sacred. The universality of instability is, therefore, the universality of openness — the cosmos persists in a state of permanent possibility, each present loaded with futures that cannot be determined.

2.4 Transition

If every particular form — if every specific configuration of matter and energy — is metastable, if every configuration contains instabilities on different temporal scales, then a question arises: can the universe as a totality be an exception? Can the totality of forms be more stable than the parts that constitute it?

The answer cannot be other than no. If each part is condemned to instability — not by imperfection, but by constitution — then the whole cannot be more solid than the parts. The universality of metastability is unqualified universality. The accelerated expansion of the universe itself — demonstrated by observations of distant supernovae and confirmed by the distribution of the CMB — is instability on a cosmological scale: the geometry of space-time does not rest, it does not stabilise in a static configuration. It also applies to the entire universe. No level of organisation is exempt; no spatial or temporal scale escapes the metastable condition.

This means that becoming is not accidental. It is not disturbance of an eternal and stable being. It is the ordinary, universal regime of material reality. The form does not rest. Every form is a promise of another form — and instability is the fidelity of the real to its own becoming.

Axis 3 — Declaration of non-totality

3.1 Genealogy of cosmic totalization

The doctrine we have just exposed — form as an unstable configuration, transformation as a universal property — encounters peculiar resistance when it comes to applying it to the whole. Each particular form is recognised as passing. The material that composes it will be different. The relationships that sustain it will disperse into other constellations. However, the Western tradition, with remarkable persistence, has refused to extend this principle to the whole. The cosmos, as a totality, would escape the instability that governs its parts. Precisely here lives the illusion that needs to be eliminated.

Plato offered the founding image. In Timeus, the cosmos is living — a cohesive and perfect body, modeled by the intelligence of the Demiurge according to eternal ideas. The order is printed from the outside. The form of the whole is, in principle, a refuge against variation: the cosmos as an immortal, self-sufficient animal, enclosed in a sphere that contains everything. Each part submits to the harmony of the whole. The structure is hierarchical: the celestial spheres in perfect movement, the sublunary region in transformation, but all of it involved in a comprehensible unity. The Platonic cosmos is an object — intelligible, finished, complete in itself.

Aristotle radicalises and systematizes. The cosmos is finite — a sphere of determinate radius that contains all things. It is spherical — perfect shape, without excesses or deficiencies. It is hierarchical — from the lunar sphere inwards, corruption and generation; above, eternity and perfection. And precisely because it is hierarchical, it is intelligible: each thing is known by its place in the order. Universe-object, delimitable, intelligible in its entirety. The form of the whole is not transitory — it is substance. This model exercised dominance for more than fifteen hundred years. Not even medieval Christian cosmology removed it: it repositioned it, centering the Earth and its celestial circles, but maintained the architecture of a finite, spherical, hierarchical, closed cosmos.

Giordano Bruno, on the threshold of modernity, undoes the fence. The universe is infinite. There is no privileged centre, nor periphery. No enclosing sphere that contains. Space extends without end. Infinite worlds inhabited by infinite creatures. The rupture is radical: Aristotle is rejected, the hierarchical structure is rejected, the closure of the cosmos in concentric spheres is rejected. However — and this is decisive — Bruno places the question in a metaphysical background. Infinity is an attribute of Divinity, projected into material reality. Infinity is still principle, still totality — only immense, uncircumscribed, incomprehensible. The infinite universe is infinitely real because it is an expression of the divine Infinity. Totality persists: it only unfolds into infinity.

Kant diagnoses the impasse with cutting precision. In the Antinomies of Pure Reason, the philosopher develops demonstrations that reason necessarily falls into contradiction when trying to totalize. If it is stated that the universe is finite (thesis), reason demands that we ask what is beyond its border — and it falls into absurdity. If it is stated that it is infinite (antithesis), reason demands that it be understood as complete in itself, as totality — and this is also contradictory. The same occurs with the question of beginning: is there a first moment (thesis) or is the universe eternal (antithesis)? Both positions involve logical impossibilities when applied to the cosmos as a totality. Antinomy is not a transitory gap in the theory. It is a structural property of the operation itself. Reason cannot think in totality without contradiction. However — and here Kant simultaneously inverts and retreats — the philosopher locates the disagreement in the transcendental subject. It is the form of human knowledge that cannot encompass the entirety. The universe as a totality surpasses possible experience; therefore, it is not the object of metaphysics, but the limit of all experience. The shift that is important to make is distinct: non-totalization is not a deficiency of the cognizing subject. It is a material property of the real. The real does not offer itself as a totality because it is not a totality. In this Kant turned on a light — but immediately turned it off, sending the question back to the subjective and transcendental structure.

Hegel tries the opposite gesture: returning to totalization and restoring it as an immanent process. The Absolute is no longer an external God or harmonious sphere — it is Reason in motion, dialectically self-conscious. The real is rational, and rationality is a story of self-overcoming. Totality emerges as an immanent result, not as a transcendent starting point. The material process is the very genesis of the cosmic Subject. Denial begets denial of denial; contradiction moves to synthesis; the alienated person rests in himself. The greatest intellectual ambition to rescue unity was also the greatest conceptual capture. Because Hegel rescues precisely what is necessary to refuse: a cosmic Subject that recognises itself through history, a teleology that guides dispersion towards final reconciliation, a rationality that domesticates contingency and reabsorbs it into necessity. Hegel offers real gains — abandons the transcendent God, discovers that the process is constitutive, that the real is immanent. But it reintroduces fatal losses — the Subject who knows, the Reason that commands, the end on which everything rests. Hegelian non-totality is only apparent — dialectics anticipates it, understands it and collects it in the Absolute. In the end, everything is right. Everything converges. Everything is rest in itself.

The refusal must be clear. The material process does not converge to self-determination. Disperse. It configures and reconfigures itself in forms that no universal Subject recognises, nor collects, nor understands. There is no Absolute that holds back history. There is no reconciliation that ends the process. There are only material differences that are continually reorganised, without a resting point, without a final synthesis, without a truth that restores them to the one. History has no meaning — in the sense of direction or significance. There is only process. Differences that transform without convergence.

This genealogy is not an academic exercise. Each position marks a specific mode of resistance to the consequence that now needs to be accepted. If every particular form is metastable — if each configuration carries within itself its own imminent destruction — then the universe as a "totality of forms" cannot be an object. The non-totality of reality is not a late discovery or uncomfortable aporia of contemporary physics. It is a deductive conclusion of the very instability that characterises every material configuration.

3.2 The universe is not delimitable, unifiable, nor identical to itself

Demonstrating this requires going down to material constraints. The universe stops being an abstract category and becomes a concrete field of indeterminacy — not because knowledge fails, but because the reality investigated is intrinsically indeterminable.

*Delimitability is the first illusion to dissolve.*

Each observer is located within a cosmological horizon — moving, approximately 46 billion light years — beyond which no electromagnetic information reaches. This horizon is often presented as the limit of the observable universe. The language is precise: observable. It is not the limit of the real universe. Not even the limit of the real material universe. It is only what light, in the propagation times available from the Big Bang event to the cosmic present, has managed to achieve. The distinction matters. The cosmological horizon is the limit of what is accessible to the current inscriptional regime. However, the real universe extends beyond this limit. Not as "invisible space" — as a remnant of material reality that no future observation will be able to reach.

Each observer, each point in relational space, has its own horizon. An observer located billions of light years away would have a displaced and different horizon. This means that the "observable" universe is perspectival — it depends on the location and relative speed of the observer. There is no single observable universe. There are multiple overlapping observable regions, each with its own horizon, each unable to see beyond its boundary. The total real universe, if this makes sense, is vastly larger — immeasurable beyond this limit that is accessible to us.

Cosmic inflation, as developed by Alan Guth in 1981 and refined by Andrei Linde and others, radically complicates this picture. The standard model of cosmology — based on the Friedmann equations derived from general relativity — predicts that, at a very early time (10⁻³⁶ seconds after the Big Bang), the universe underwent a period of exponential expansion. In an infinitely short time, microscopic regions were expanded to cosmological dimensions. This mechanism explains why the observable universe is so uniform and why energy density is so finely calibrated. It also implies that the total real universe, before any observation, is arbitrarily larger than the observable. Some inflation models (Linde's eternal inflation) allow this process to have continued indefinitely in different regions, generating a multiverse — a foam of distinct universes, each with its own physical laws and fundamental constants. Whether inflation is simply finite or eternal, the conclusion is the same: the total universe is immeasurable beyond the horizon.

Furthermore, the overall topology of the universe — its three-dimensional (or higher-dimensional, as the case may be) shape — remains undetermined. The universe can be closed (sphericity, positive Ricci curvature), open (hyperbolicity, negative curvature), or flat (zero curvature). Current cosmological agreement suggests planarity, but this is a conclusion derived from the model. Connectivity also varies: the topology can be simple (simply connected, without "holes" or "handles") or multiple (with topological handles that would allow trajectories that return to the point of origin after surrounding the "alley" of space). No direct observation can access information about the global topology. The anisotropies of the CMB — the map of temperature variations in the cosmic microwave background — limit the possibilities but do not eliminate indeterminacy. If the universe were slightly more curved or more complexly connected, the effects would be too subtle to detect with current sensibility. No future observations will be able to measure the global topology — because to measure something, you need access to a comparable or larger scale. The total universe is larger than any possible observational scale. The global topology is therefore forever indeterminate by the observable.

Eternal inflation further expands this situation. If the inflationary process continued indefinitely in distinct regions — as some models suggest — then there is not just one universe, but a multiplicity of universes, each with potentially distinct fundamental constants and effective laws. This multiverse is, at the same time, a product of physics and unobservable fiction. No observation can access universes beyond our horizon. There is not even a unifying principle that governs proliferation. It is pure proliferation — multiplication of realities without a totality that contains them. The question "why are there universes?" has no physical response. The multiverse is an effect of physical dynamics itself, but it also declares the impossibility of answering why physics is the way it is. The chain of explanation ends not in foundation, but in endless multiplication. This indeterminacy is not a transitory gap in contemporary cosmology. It is a material constraint. The universe is not delimitable because the real material that constitutes the universe has no measurable delimitation.

*Unifiability is the second illusion.*

The universe operates on radically irreconcilable scales. Quantum mechanics governs the microworld — elementary particles, atoms, atomic nuclei — and reveals behaviours unparalleled in macroscopic experience or classical intuition. Superposition: a particle exists in multiple states simultaneously until measurement. Entanglement: two distant particles behave in a correlated way, instantaneously, with no known transmission mechanism. Observation effect: the very act of measurement affects the state of the particle, collapses the superposition, reduces the possibilities. Indeterminacy: position and momentum cannot be simultaneously determined; energy and time are correlated so that the more accurate the first, the less accurate the second. General relativity governs the macroworld — galaxies, galaxy clusters, the global structure of spacetime — and reveals a radically different geometry. Space-time is not an inert container where things move. It is a dynamic entity, curved by the distribution of matter and energy. Curvature is gravity. Gravity is not a classical force that acts through space; it is an expression of the geometry of relational space. Matter and energy deform space-time; space-time thus deformed guides the movement of matter. This is relational circularity of a type fundamentally distinct from quantum mechanism.

Where these scales meet — inside black holes, where the concentration of matter is extreme and the curvature diverges to infinity; in the early universe, in the first moments after the Big Bang, where energy density was incomprehensible — the two theories are in open conflict. Quantum mechanics and general relativity are incompatible. Quantum field theory, which attempts to combine quantum mechanics with special relativity, produces infinities — integrals that diverge to infinity — in any attempt at calculating precision. Renormalization procedures — mathematical techniques that absorb these infinities into parameter redefinitions — work pragmatically: they allow extracting predictions that agree extraordinarily with observation. Now, they are, admittedly, mathematical tricks, not ontological solutions. Quantum gravitation, despite seven decades of intense investigation — attempts via quantized gravity, string theory, loop quantum gravity, geometrogenesis — has not been achieved. No satisfactory theory can combine, coherently and without infinities, quantum mechanics with general relativity. Not because there is a lack of ingenuity or computational capacity. Because the scales involved — Planck length (10⁻³⁵ meters), Planck time (10⁻⁴³ seconds), Planck energy (10¹⁹ GeV) — are so far from observation that no future experiment will be able to access them directly. The most powerful particle accelerator imaginable, the size of the galaxy, powered by the energy of all the stars, would still not reach Planck's energies. The theoretical unification of scales seeks to link these two rival descriptions of reality. But it is a search that remains perpetually postponed, not for lack of trying, but because the material reality that we try to unify is, perhaps, intrinsically multiple in regimes.

The theoretical difficulty is superimposed on an even deeper observational difficulty.

Approximately 27% of the material and energy content of the universe is dark matter. Misleading designation. It is not invisible matter — darkened by cosmic dust, interstellar dust, or gravitational absorption. It is a material difference that is inferred solely by its gravitational response. No telescope, no spectrograph can detect it by emission or absorption of electromagnetic radiation. Its existence is postulated solely because the observed dynamics violate predictions.

The rotation curves of galaxies provide the classic case. If only visible matter (stars, gas, dust) contributed to gravitation, the orbital speed of objects should decrease with distance from the centre — just as the orbital speed of planets decreases with distance from the Sun. The Newtonian prediction is clear: v ∝ 1/√r. Something radically different is observed. The rotational speed remains approximately constant, regardless of the distance from the centre. The rotation curve is flat. This is robust observation, confirmed for hundreds of galaxies, of all morphological types. If only visible matter were present, the outer galaxies could not rotate so quickly — they would be torn apart by centrifugal force. Something else — much more — contributes to gravity. Something invisible to electromagnetic radiation. Dark matter. Spectroscopic estimates suggest that the ratio of visible matter to dark matter is approximately 1:5. For every kilogram of visible matter, there are five kilograms of dark matter.

Gravitational lensing strengthens this conclusion. General relativity predicts that light, when passing close to a concentration of mass, is deflected. Mass acts as a lens. Regimes are observed where the magnification and shift are consistent with concentrations of matter that do not emit any light. Galaxy clusters contain much more mass — inferred by gravitational lensing — than corresponds to luminous matter. The anisotropies of the cosmic microwave background — the map of the early universe as it appeared 380,000 years after the Big Bang, when photons became uncoupled from matter and began to travel freely — require, for their consistent explanation, a material environment much denser than that which emits radiation. The acoustic oscillations visible in the CMB map reflect the presence of dark matter. Dark matter is necessary inference, converging from multiple lines of evidence.

But the identity remains unknown. Candidates propose: axions — very light and numerous particles, originally proposed to solve problems in quantum chromodynamics? Neutralinos — supercompanions of known particles, predicted by supersymmetry? WIMPs — Weakly Interacting Massive Particles — massive particles that interact only gravitationally and through the weak nuclear force? Sterile — "sterile" neutrinos that don't interact even weakly, only gravitationally? None of these candidates has been conclusively identified. Multiple direct detection experiments — xenon spectrometry, cryogenic ionization chambers — seek to detect the interaction of dark matter with ordinary matter. No conclusive detection. Dark matter is real — it operates, acts, has measurable effects on the dynamics of galaxies, on the structure of the primordial universe. However, its manifestation remains veiled. The real material that constitutes 27% of the universe resists phenomenological identification.

In parallel, approximately 68% of the content of the universe is dark energy. An even more unsatisfactory designation than the previous one. It is not "energy" in the classical sense — kinetic heat, motion, electromagnetic radiation, potential energy. It is a cosmological operator associated with the acceleration of expansion of the universe. The cosmological constant (Λ), introduced by Einstein into the field equations of general relativity and then abandoned for decades, is currently the best theoretical candidate. It represents an energy density that remains constant through time and space.

In 1998, three independent teams — led by Saul Perlmutter, Brian Schmidt and Adam Riess — studied Type Ia supernovae in distant galaxies. A slowdown was expected. Gravity, acting from the outside in, should slow down the expansion. The universe started out hot and dense; Gravity should have slowed down its accelerated expansion in the early moments. The opposite was observed. Expansion is accelerating. Distant regions move away from each other with increasing speed. Something pulls the fabric of spacetime apart. This "something" is immaterial in relation to classical paintings. It is not ordinary matter — it would be observable. It is not radiation — it does not have radiation properties. It is not dark matter — dark matter attracts gravitationally. It is an operator that repels. Dark energy is therefore a property of changing relational space — or, in the precise language of general relativity, a property of the spacetime metric.

The magnitude of this operator is remarkably calibrated. A 1% difference in the observed value would have radical cosmic consequences. If it were 10% larger, the universe would have expanded so quickly, in the first moments, that no galaxy would have been able to form. The primordial quantum fluctuations would have been stretched beyond gravitational reach. Large-scale structure — galaxies, clusters — would not exist. If it were 10% smaller, the universe would have collapsed in on itself billions of years ago. No star would have had time to be born and die. No complex chemistry. The calibration is extraordinary. Why? Quantum field theory offers a hunch: the zero-point energy of the quantum vacuum, the residual energy that remains even in the vacuum state, should contribute to the cosmological constant. The calculations predict a value for this vacuum energy density. The observed value is different. Not just slightly different. It is smaller by a factor of 10¹²⁰. This number is incomparable: a 1 followed by 120 zeros. No numerical discrepancy in any other science approaches this abyss. It is called the "worst theoretical guess ever." Dark energy resists not only phenomenological identification — like dark matter — but theoretical framing itself. It is a material difference that the current inscription regime can infer from the observed cosmological acceleration, but whose origin and nature remain undetermined.

*The third illusion is self-identity.*

The contemporary universe is radically different from the universe one second after the Big Bang. So, temperature above 10¹⁵ Kelvin; now, average temperature of 2.725 Kelvin. So, incomprehensible matter-energy density, concentrated in microscopic volume; now, dispersed density in accelerated expansion, with galaxies separated by chasms of empty space. So, still formless, uncoupled elementary particles; now, structure crystallized in atoms, molecules, galaxies, cosmic filaments billions of light years long. Transformation is not accumulation — it is total reorganisation of the material constitution.

The primordial universe did not "contain" the present universe as if there were a hidden plane that gradually unfolded. It was a completely different material regime. The constituents were different. The symmetries were different. The effective laws were different — to the extent that one could speak of "laws" in a regime where the very notion of classical law was not applicable. The transitions between epochs — the electroweak transition, where the electromagnetic and weak nuclear forces unify into a single regime; the primordial nucleosynthesis, where atomic nuclei formed — these were profound breaking points, not simply continuous development.

Worse: the accelerated expansion of the universe, revealed in 1998 and reaffirmed by subsequent measurements, makes the cosmological horizon dynamic. Regions that are accessible to us today — that is, regions from which light can reach us — will become unreachable in billions of years. Light from these regions, traveling through rapidly expanding space, will never reach us. The observable universe will shrink. In the very distant future, observers in our cosmic location will only see the galaxies gravitationally bound to us (Local Group, Local Supercluster). Everything else will have disappeared beyond the cosmological horizon. The observable universe is, therefore, transitory. It changes over time. If the observable universe changes, and if the total real universe is incommensurable beyond the observable, then the identity of the universe is fundamentally transitory. There is no such thing as "the universe" as a permanent entity identical to itself through time. There are continuous material reconfigurations — loss of structure, dispersion of energy, reordering of relationships — that no fixed designation can retain.

3.3 Dark matter and dark energy as ontological limiting cases

Herein lies the most divisive point of the argument. Dark matter and dark energy are not simply unknowns — open problems that future research will resolve. These are limit cases in which the distinction between real, concrete and theory reveals its most acute need. These are points where material reality refuses to fully coincide with manifestation. These are moments where the registration regime reaches its constitutive limits.

*Dark matter as an enlargement of reality.*

Dark matter appears, superficially, as "invisible matter". The expression is misleading. The concept of matter — material difference, configurational tension, that which affects other configurations through gravitation — is broad enough to include that which does not emit electromagnetic radiation. Ordinary matter is opaque or luminous because its atoms absorb, re-emit or reflect photons. Electrons jump between energy levels, emitting photons with characteristic wavelengths. Dark matter does not do this. It has no electrons (or it has them, but does not exhibit transitions that emit photons). But it works. Curves space-time according to general relativity. Organizes the dynamics of galaxies. Leaves indelible marks on the map of the cosmic microwave background.

The decisive philosophical point: the material real operates even when the inscriptional regime does not manifest. Dark matter is not "beyond the real" — it is real that the concrete infers from gravitational conformities. The rotation curves of galaxies are concrete — data, direct observations. Gravitational lenses are concrete. The anisotropies of the CMB are concrete. From this concrete, the existence of dark matter is inferred. And theory — cold dark matter (CDM) models, warm dark matter (WDM), alternative hypotheses like MOND — reorganises this data into understandable schemes. The tripartite works with precision. The real material exists and operates; the concrete, the observational conformities, make it legible; theory organises it into models and predictions. Dark matter thus exposes a decisive truth: "material" does not coincide with "manifestable". The real material far exceeds what the inscriptional regime can capture phenomenologically. There is more matter in the universe than that which shines. There is more reality than visibility.

*Dark energy as constitutive indeterminacy.*

Dark energy is an even more radical case. It is not "mysterious energy" — it is a cosmological operator associated with the acceleration of expansion. The cosmological constant (Λ) is, perhaps, the best theoretical candidate. However, the prediction of vacuum density — the residual energy of the quantum vacuum — made by quantum field theory deviates from the observed value by 120 orders of magnitude. This numerical abyss is not an error correctable by contemporary theory. It is not a lack of precision that future measurements will correct. It suggests that the concept of "energy" — as understood in classical and quantum physics — does not fully apply to the cosmological operator in question. Dark energy is not a field in the Faraday or Klein-Gordon sense. It is not a particle. It is not radiation. It is a relational property of transforming spacetime — or perhaps a property of quantum vacuum in contexts of extreme gravitational curvature.

The theory quantizes it as cosmological constant Λ; concrete records the acceleration observed through spectra of distant supernovae and CMB anisotropies; the real operates as a constitutive indeterminacy that is not completely reduced to any of these registers. Dark energy is, therefore, a case in which the real resists not only direct phenomenological manifestation, but complete theoretical determination. Not because knowledge is insufficient — because the material operation in question is, ontologically, indeterminate. There is no hidden truth about dark energy that future research will reveal simply by improving models. There is a genuinely irresolvable material operation within the available conceptual frameworks.

The discrepancy of 10¹²⁰ is precisely a sign of this. It is not a miscalculation. It is an indicator that the theory does not capture the real operative. If the vacuum energy predicted by quantum field theory was indeed (even on a reduced scale) the source of dark energy, the observed value should be close to the prediction. The 120 orders of magnitude gulf suggests that we are talking about two different things, or that field theory is not applicable to the cosmological regime in question. Dark energy is a material difference that the current inscriptional regime can infer from the observed cosmological acceleration, from gravitational conformities that regulate expansion, but whose origin and nature remain undetermined. There is no single truth that would explain it. There are possible operators — cosmological constant, quintessence (dynamic field instead of constant), dark matter coupled to curvature — but none offers a complete answer. There is a permanent gap between the model (theory), the data (concrete) and what operates (real). Dark energy marks this unresolvable fracture point.

*The joint consequence: 95% of the universe is unmanifest.*

Visible matter — that which emits, absorbs or reflects electromagnetic radiation, accessible to our telescopes and spectroscopes — is only 5% of the material and energetic content of the universe. The remaining 95% operate outside of direct manifestation. If "reality" were defined as what the inscriptional regime captures, then 95% of the content would be unreal. The reasoning is absurd. The necessary conclusion is the opposite: the current registration regime accesses a small fraction — a tiny fraction — of the real material. The real total is vastly more extensive than the concrete that we can measure, observe, photograph, spectroscopy.

This radically changes the relationship between knowledge and reality. For centuries, natural philosophy and then science operated under an implicit assumption: the investigable is approximately coextensive with the real. What could be measured was essentially what existed. The assumption was reasonable in its context — if reality were fundamentally and massively inaccessible, the scientific enterprise would be impossible. But dark matter and dark energy reveal something disturbing. Not only is the real partially inaccessible — this was already recognised. It is partially inaccessible in a constitutive and permanent way. It is not a lack of advanced instrumentation. It is not a lack of time, technique, or ingenuity. It is just that 95% of the contents of the universe operate outside of any regime of manifestation possible through electromagnetic radiation. Dark matter does not interact with light. Dark energy is an operator whose nature resists complete formulation within existing theoretical frameworks. Knowledge has limits not only because the subject is finite — Kant knew this — but because the real is constitutively more extensive than the knowable. The real permanently exceeds what the inscription can capture.

Within this inaccessible reality, there is no homogeneity. Dark matter — around 27% — is probably an extension of the concept of matter to particles or fields not yet identified, but fundamentally material, tensional differences in a continuum with ordinary matter. It operates through gravitation. Can weakly interact with ordinary matter. There remains, in logical structure, matter — a configuration that affects and is affected, a difference that modulates other differences. Dark energy — about 68% — is ontologically distinct. It is a cosmological operator of a still undetermined nature, different in type from any known phenomenon, not reducible to the classical frameworks of energy, field or particle. The indiscriminate fusion of these two components under the common label of "dark matter-energy" would be a serious conceptual error. They belong to different ontological regimes. The universe is, therefore, non-unifiable not only due to the incommensurability of theoretical scales (microworld vs. macroworld), but due to the intrinsic and irreducible heterogeneity of the reality that it constitutes. It is not a homogeneous totality. It is heterogeneous multiplicity.

*Fine adjustment and its correct ontological location.*

As for fine-tuning — the remarkably precise calibration of cosmological parameters that allowed structure formation — the answer should be absolutely clear. Fine-tuning is an inscriptional problem, not an ontological one. It is not real property. It is a relationship between concrete and theory. It belongs to the domain in which knowledge operates, not to what is known.

The current cosmological model (Big Bang, cosmic inflation, cosmological constant, dark matter) predicts that certain parameters — the average density of the universe, the ratio of ordinary matter to dark matter, the magnitude of the cosmological constant, the amplitudes of the primordial quantum fluctuations — must lie in very precise intervals without which gravitational structure cannot form. If these parameters had slightly different values, the universe would be qualitatively different. If the density were 1% higher, the universe would have collapsed before any galaxies formed. If it were 1% smaller, the matter would have dispersed too quickly. If the cosmological constant had been 1% higher, expansion would have dominated such that no galaxies would have formed. If it was 1% smaller, gravity would have collapsed everything. This observational fact is true and important. The precision required is extraordinary. However, — and this is crucial — precision belongs to the concrete (data, measurements, comparison between observation and theoretical prediction) and to theory (models that generate predictions for these parameters). It does not belong to the real.

To project onto the real the need for this precision — as if the material universe had been "adjusted to" allow observers or structure — would be to reintroduce, through the back door, the teleology that was explicitly rejected. The actual has not been "adjusted for". The real differentiates itself into contingent configurations. The concrete revealed that the particular configuration in which we are located — in this particular universe, with these particular parameters — has characteristics that allowed the formation of structure. This is valuable concrete and theoretical information. It is an observational constraint that restricts theoretically compatible models. But it is not real property. The real is indeterminate in this regard. Today's universe exists with the parameters it has. There is a counterfactual possibility — "if the parameters were different, the universe would be different." However, this possibility lives in theoretical space, not in reality. The real is what it is. What could have been remains in the realm of modality, a symbolic category that the real does not inhabit.

3.4 The consequence: the universe as an open field

If the universe is not delimitable — the cosmological horizon is a limit of manifestation, not of existence — it is not totalizable. If it is not unifiable — irreconcilable scales, heterogeneous ontological regimes, 95% of the content inaccessible — it is not an object of complete knowledge. If it is not self-identical — it radically transforms itself in structure and content, dynamic horizon becomes unattainable — it is not a permanent entity. What remains? Open field of material reorganisation. No exterior, because there is no prior container. No isolated interior, because material relations continually constitute its own configuration. Relationships are not contained "in" a universe — relationships constitute the universe. Matter does not rest in space. Space is not a container for matter. Matter and space are aspects of the same relational fabric.

If the universe is not an object — it is not a delimitable, unifiable, self-identical totality — then the last metaphysical illusions fall. God as external creator — where would you place him, if there is no external? If there is no space to position a transcendent creator, the metaphysics of the creator is symbolic fiction, not a description of reality. Foundation as previous soil — that would support it? If there is no rest from the real, if there is always transformation, always difference, then there is no stable ground to support. centre as a point of privilege — in relation to what, if there is no periphery? General relativity had already shown that there is no privileged point in space. Now we see that there is also no point in time, there is no resting point in matter, there is no totality in which history converges.

Nor is there an immutable essence that subsists under transformation. If the universe is not self-identical — if it radically changes its constitution, operating regime, structure — then there is no essential core that persists. What we call "universe" is a provisional designation for a set of relational processes that are continually reorganised. Yesterday was a primordial extreme temperature regime; Today it is a regime of galaxies and accelerated empty space. No "universe in itself" subsists through these transformations. There are only material differences that follow each other, without a substance that supports them, without an essence that brings them together.

The non-totality of the universe is not a defect or gap to be lamented. It is a positive property of the real. It means that material reality is not collected in any final form, any synthesis, any truth that would contain it. It means that there is always excess — always unsubsumed difference, always unactualized potential, always virtuality that the concrete does not exhaust. It means there is always process — always transformation, always reorganisation, always reconfiguration. It means that the stability of particular forms is a local and temporary achievement, sustained by flows of energy, material tensions, relationships that no fixed measure can completely retain. It is an achievement that is continually undone. It is order that chaos reorganises. There is no rest possible.

Understanding this is undoing millennia of illusion. The cosmos is not an object that offers itself to intelligence as a knowable totality. It is not Plato's harmonious sphere. It is not Aristotle's hierarchical cosmos. It is not Bruno's infinity. It is not a Hegelian Absolute that collects history. It is an open, heterogeneous, incommensurable field — multiplicity without synthesis, process without destiny, difference without rest. What this means for investigation is that the real always exceeds the known, not by transitory gap, but by constitutive material structure. There are always regions of the universe beyond the horizon that no future observation will reach. There are always irreconcilable scales — quantum and gravitational — that no future theory will completely unify. There are always operators whose nature remains undetermined — dark energy and much of matter. This is not a failure of science. It is an essential discovery: that reality is vaster, more multiple, more heterogeneous than any model that represents it. And this heterogeneity is not temporary — it is permanent.

And this also means that there is no foundation, in the traditional metaphysical sense — there is no prior ground, there is no supreme principle from which everything would derive. If the universe is not totality, there is no resting point where reality is permanently sustained. If the universe is not delimitable, there is no exterior from which a creator could act in a transcendent way. If the universe is not self-identical, there is no immutable essence that defines it and that persists through transformation. There is only matter that differentiates, relationships that reorganise, configurations that transform — indefinitely, without a metaphysical point of origin, without a final resting point. The material does not rest in a previous container, in a frame that supports it. Matter is the very fabric of reality — relational fabric without external frame, continuous process without point of arrival, difference without rest.

Closing aphorism: Matter does not rest in a previous container — it is the very relational fabric of the real, without an external frame, without a point of support, without an ultimate truth that retains it.