Every Form Is Unstable

No form in space is permanently stable. From virtual particles that emerge and disappear in the quantum vacuum to galactic superclusters that dissolve in the accelerated expansion of the universe, every material configuration is in a process of continuous reorganisation.

Instability is not a defect, it is not an exception, it is not an occasional failure in a supposedly ordered cosmos; it is a universal ontological condition.

There is no way - stellar, galactic, planetary, molecular - that escapes transformation. Some persist for millions of years, others for fractions of a second; but all are transient, all are vulnerable, all will reorganise.

This statement is neither cosmological pessimism nor a nihilistic celebration of dissolution. It is an ontological reading built on the regularities that contemporary physics has stabilized: astronomical observations, differential equations and thermodynamic principles converge on the idea that forms are metastable configurations - provisional balances between forces in tension, inevitably exposed to reorganisation when conditions change.

And conditions always change: nuclear fuel runs out, gravitational perturbations accumulate, cosmic expansion dilutes structures. There is no final rest, there is no definitive form, there is no absolute stability.

The previous text ("Form Is Not Essence") established that forms do not manifest prior essences; emerge from contingent material processes. This text develops the radical consequence of this absence of essence: if there is no essential foundation that anchors the form, there is no guarantee of permanence.

Every form is radically vulnerable. Instability is not accidental; it is structural. It follows directly from the emergent and non-essential nature of forms: configurations that emerge from contingencies can dissolve when these contingencies are reconfigured.

And contingencies are always reconfigured. Throughout the text, physics will not be taken as the "absolute arbiter of the real", but as one of the fields in which instability becomes materially traceable - the starting point for a broader ontological formulation on the instability of every configured order.

I. The Illusion of Eternal Form: Critical Genealogy

The Western philosophical tradition, from Parmenides to classical physics, sought stable, eternal, immutable forms. This search was not arbitrary; responded to a demand: if everything flows incessantly, how can we know? If nothing persists, how can we fix truths? The hypothesis of eternal forms was an attempt to guarantee a foundation for knowledge.

But the scientific developments of recent centuries have eroded this horizon: the more closely physical processes are observed, the more evident it becomes that no form is preserved intact, from the atomic nucleus to the cosmic fabric. Intelligibility does not require eternity; it requires only provisional regularities lasting enough to permit symbolic inscription.

Parmenides and the Eternity of Spherical Being

Parmenides, in fragment 8 of On Nature, identifies Being with an immobile and complete sphere: one, continuous, without generation or corruption. Becoming belongs to the domain of doxa, of deceptive appearance; the authentic Being is immutable.

Sphericity geometrically expresses this immobility: the sphere has no beginning or end, it has no privileged direction, it does not admit internal asymmetries. It is a figurative form of a flawless eternity.

Contemporary cosmology is breaking with this ideal. The observable universe has been expanding for about 13.8 billion years, and the expansion is accelerating. When Lemaître proposed, in 1927, a model of an expanding universe based on Einstein's field equations (Lemaître 1927), and Hubble confirmed in 1929, with observations, that galaxies move away at a speed proportional to the distance (Hubble 1929), the cosmos ceased to be an immobile stage.

It is no longer possible to think of it as a perfect sphere at rest; it becomes inevitable to think of it as a story of irreversible expansion, continuous transformation, incessant reorganisation. Under any reading, the hypothesis of an immobile spherical Being is no longer compatible with the material traceability of the universe.

Even apparently stable local structures are dynamically active. The Sun - a main sequence star 4.6 billion years ago - converts around 600 million tons of hydrogen into helium per second, radiates 3.8 × 10²⁶ watts, ejects solar wind, generates spots due to magnetohydrodynamic instabilities.

The appearance of stability is just the visible face of a dynamic balance between thermal pressure and gravity, maintained by continuous nuclear fusion. And even this balance is provisional: when the hydrogen in the core runs out (in about 5 billion years), the "main sequence star" form will be irretrievably dissolved into a red giant.

Plato: Ideal Forms as Transcendental Eternity

Plato, in the Phaedo and the Republic, establishes a hierarchy between eternal intelligible Forms and ephemeral sensible things. The Forms are immutable; the Form of the Circle does not age, the Form of Justice does not corrode. Sensible things, on the contrary, are born and perish, they are imperfect copies of these eternal models.

In Timaeus, the stars, when moving in perfect circles, imitate geometric eternity in duration. Modern astronomy dispels the idea that celestial circularity guarantees any kind of eternity.

Kepler shows that planetary orbits are elliptical, not circular (Kepler 1609). The transition from circle to ellipse is not just a geometric detail; it is the abandonment of perfection as a principle of intelligibility. The ellipse is asymmetrical, has relative foci, variable eccentricities, perihelions and aphelia that move in time.

Under gravitational perturbations from other bodies, orbits slowly change; There is no longer a "perfect path" repeated indefinitely, but a trajectory that reconfigures itself.

Einstein's general relativity radicalizes this shift: orbits stop being geometric lines in neutral space and become geodesics in curved space-time (Einstein 1916). Geometry itself becomes a function of mass-energy distribution. The classic example - anomalous precession of Mercury's perihelion - shows that not even planetary orbits are repeatable closed forms; slowly describe rosettes. The Platonic ideal of an eternal geometric form that stars would imitate is replaced by the image of unstable trajectories in a changing geometric fabric.

Aristotle: Unmoved Mover and Incorruptible Heaven

Aristotle proposes a divided cosmos: below the Moon, the domain of generation and corruption; above, the incorruptible domain of the aether. The Unmoved Motor guarantees eternity of the circular movement of the stars without substantial change. The fixed stars and planets would be, in their substance, immutable; they would just change position.

Modern astronomical observation destroys this boundary. The supernova of 1572, analyzed by Tycho Brahe, is not a sublunary phenomenon; It's a starburst. The sunspots studied by Galileo show that the Sun itself exhibits appearance and disappearance phenomena.

And contemporary astrophysics organises this scattered data into a systematic evolutionary narrative: all stars are born, evolve, and die. Aristotelian incorruptibility finds no support in astronomical phenomenology; the celestial sphere is as historically unstable as the sublunary domain.

Chandrasekhar systematizes stellar evolution as a sequence of distinct phases, marked by profound structural changes (Chandrasekhar 1931). The main sequence star does not "approximate" an ideal shape; It is a stage on a journey in which the internal configuration itself is rewritten. The Aristotelian ontology of the incorruptible sky becomes incompatible with the real history of the stars.

This reconstruction of tradition is deliberately selective: it does not intend to exhaustive philological exegesis, but to highlight the traits that become operative for an ontology of instability.

Classical Physics: Conservation, Reversibility and the Appearance of Stability

Newton's laws of motion are temporally reversible: by knowing a state, we can calculate both the future and the past. Laplace takes this idea to the limit by imagining an intelligence that, knowing all forces and positions in an instant, could reconstruct the entire history of the universe.

This picture suggests a cosmos in which instability is just human ignorance: if we knew everything, nothing would surprise us. But even on a classical level this image is misleading. Thermodynamics introduces an arrow of time: the entropy of an isolated system never decreases.

Boltzmann interprets the second law as a probabilistic tendency toward more probable macrostates (Boltzmann 1877); the reversibility of the equations does not prevent a profound statistical asymmetry between past and future.

Chaos theory shows, in turn, that deterministic systems can be, in practice, unpredictable: small differences in initial conditions amplify, making it impossible for any finite agent to reconstruct long-term trajectories.

When quantum mechanics adds uncertainty and effective indeterminacy, the Laplacian scheme itself is called into question. On standard quantum interpretations, there are no perfectly defined initial states that propagate transparently; There are wave functions, probability amplitudes, and measurement events where the outcome is not predictable even in principle.

From this set of shifts, the ideal of a stable universe, transparent to infinite intelligence, is no longer sustainable. The physical reality begins to appear, on all scales, as a field of controlled instabilities.

II. Instabilidade Universal: Atravessando Todas as Escalas

From the quantum to the cosmological scale, no form escapes reorganisation. This universality is no accident; arises from the fact that forms are relational configurations supported by dynamic balances.

A dynamic equilibrium is always metastable: it resists disturbances up to a certain threshold, but can be disrupted by the accumulation of small variations or by sudden events. There is no form immune to disturbances; therefore, there is no absolutely stable form.

From an ontological point of view, this means that stability is not an untouchable background, but only the provisional result of certain configurations of material relations.

Quantum Scale: Unstable Vacuum

The quantum vacuum is not empty, but a fundamental state of fields, permeated by fluctuations. Particle-antiparticle pairs emerge and annihilate each other in very short times, compatible with the energy-time uncertainty relationship.

The formalization of quantum mechanics - as consolidated from Heisenberg, Bohr and Dirac - makes inevitable the idea that even the "simplest state" is a surface of instability: classical nothingness is replaced by a background of permanent restlessness.

The Casimir effect shows that these fluctuations are not calculation fiction (Casimir 1948). Two nearby conducting plates, placed in a vacuum, feel a measurable force of attraction, resulting from the difference in the spectrum of allowed modes inside and outside the cavity.

Hawking radiation is another example: quantum fluctuations near the horizon of a black hole lead to the emission of particles and thus the slow evaporation of the black hole itself (Hawking 1975). Even the most extreme gravitational form, where not even light escapes, is unstable on a long enough time scale.

The vacuum, the fields, the black holes: everything that seemed to guarantee ultimate invariance is rewritten as a regime of instability. Ontologically, this means that not even what physics describes as a fundamental state can be treated as a fixed form, but only as a materially organised mode of fluctuation.

Atomic and Molecular Scale: Radioactivity and Chemistry Far from Equilibrium

The discovery of radioactivity reveals that certain nuclei are structurally unstable. Uranium-238, radium-226, carbon-14 and many other isotopes spontaneously transform, emitting particles or radiation.

The half-life statistically quantifies this instability: some decay almost instantly, others only after thousands or millions of years. In all cases, the nuclear form is not definitive; there is always a path available to another, more stable configuration.

This nuclear instability is linked to an energy landscape in which iron occupies a local minimum: it is the nucleus with the highest binding energy per nucleon. Lighter nuclei can fuse even in the vicinity of iron; heavier nuclei can fission, releasing energy.

There is no arbitrary freedom of nuclear forms; there is a structure of possibilities in which configurations that are too cumbersome are condemned to reorganisation.

Prigogine shows, on the other hand, that chemical systems far from equilibrium can give rise to dissipative structures (Prigogine 1980; Prigogine and Stengers 1984): ordered patterns that only exist because they dissipate energy into the environment. The color oscillations of the Belousov - Zhabotinsky reaction or Bénard cells in thermal convection are examples.

These are not "quiet" forms; they are regimes in which instability is channeled into cycles, flows and structures that exist only as long as the gradient feeds them. When the flow stops, the form falls apart.

Stellar Scale: No Star Is Forever

Stellar evolution is a paradigmatic case of productive instability. The initial mass of a cloud roughly determines the path, but across all branches the message is the same: the star is a transitory phase in a much longer process of matter reorganisation.

In the main sequence, the balance between thermal pressure and gravity gives an appearance of stability. In reality, this balance is the instantaneous result of a constant process of converting mass into energy and transporting radiation outwards.

When the central hydrogen runs out, the balance is broken: the core collapses, the envelope expands, new fusion reactions ignite, the internal structure reconfigures. Red giants, supergiants, supernovae, white dwarfs, neutron stars, black holes - each state dissolves the previous one and prepares conditions for the next.

Stellar form is not a fixed type with superficial accidents; It is an episode in a series of chain reorganisations. Nucleosynthesis directly links this instability to chemical complexity. The heavy elements that make up rocky planets, oceans and biosystems are the "ashes" of dead stars.

Without collapse, explosion and dispersal, there would be no carbon, oxygen, iron or gold outside the stellar cores. What tradition saw as "corruption" - the destruction of the stellar body - is here a material condition for any further form of organisation, including life.

Galactic Scale: Collisions and Morphological Reorganisations

Galaxies appear, on a human life scale, to be stable forms. Hubble's morphological classification consolidates this impression: elliptical, spiral, barred, irregular. But long-term dynamics show that these categories are states in a process of slow and violent reorganisation.

Numerical simulations of galactic collisions reveal tidal bridges, tails, rings, shells: transient shapes that arise when two massive structures interact gravitationally. Observations of merging galaxies confirm this scenario: multiple cores, tails stretched over hundreds of thousands of light years, regions of explosive star formation.

At the end of many of these encounters, two spirals give rise to a giant elliptical. The original forms disappear; the "resulting galaxy" is not any of the previous ones plus a graft, but a new dynamic organisation.

The future collision between the Milky Way and Andromeda directly enrolls us in this process. Within a few billion years, the sky will be crossed by stellar streams, and the very identity of the galaxy we are in will be dissolved.

Nothing on the galactic scale is structurally preserved forever. From an ontological point of view, the "spiral galaxy" type is just a transitory section in a long sequence of reconfigurations.

Cosmological Scale: Expansion, Dark Energy and the Long-Term Future

In the expanding solutions of Einstein's equations, spacetime is not a container in which forms move: it is itself a changing structure. The discovery of dark energy - whatever its definitive interpretation may be - adds to this dynamic an acceleration that moves galaxies away from each other beyond the observable horizon.

An increasing part of visible matter becomes, in practical terms, irretrievable for any future interaction. Calculations like those of Adams and Laughlin, projecting the fate of stars, galaxies, and black holes over intervals of 10¹⁴ to 10¹⁰⁰ years, are speculative in detail, but they converge on one point (Adams and Laughlin 1999): there is no final cosmic form that stabilizes everything.

Star formation ceases, galaxies evaporate, black holes evaporate, energy distribution tends towards increasingly diluted states. "Thermal death", as an image of a definitive stop, is misleading; What exists is a seemingly endless sequence of reorganisations, increasingly rare and spaced out, but always marked by structural instability.

It is worth highlighting: these projections depend on laws as we know them today and on bold extrapolations. They do not function here as prophecies, but as indicators of a direction: the universe described by the best available physical theories does not converge to a static form.

At all scales, everything points to the instability of forms; the proposed ontological reading of this is that there is no material regime that can claim status in a final or definitively stable way.

III. Instability Is Not Entropy: Productive Reorganisation

The second law of thermodynamics is often invoked to support a decadent view of the cosmos: entropy increases, order degrades, everything moves towards a final state of thermal death. If universal instability were synonymous with irreversible degradation, the picture would be simple: forms are just precarious episodes on a trajectory towards erasure.

Before reviewing this image, it is important to situate the theoretical framework from which we started. The analysis carried out here appropriates, but displaces, three lines of work: Ilya Prigogine's non-equilibrium thermodynamics, Stuart Kauffman's theory of complexity and self-organisation and Thomas Kuhn's philosophy of science. From these programs we retain the centrality of irreversibility, the emergence of order far from equilibrium and the periodic reconfigurations of conceptual regimes; We refuse, however, any reintroduction of teleology or a final horizon of balance, even when suggested by certain readings of these authors.

But this simplified reading neglects three decisive aspects. First, the second law applies to isolated systems; almost all interesting forms are open systems that exchange energy and matter with the environment.

A star maintains extreme temperature and density gradients because it is far from equilibrium; an organism maintains internal order by exporting entropy; a biogeochemical cycle reorganises matter thanks to constant energy flows. Global entropy may increase, but local instability allows highly organised forms to emerge and be maintained as long as there is flow.

Second, instability is not synonymous with collapse; It is a transitional condition. When a system moves away from a stable regime, it can indeed deteriorate, but it can also reorganise itself in a more complex way. The dissipative structures studied by Prigogine illustrate this possibility: under certain conditions, departure from equilibrium does not lead to chaotic disorder, but to new patterns of dynamic order.

Thirdly, the classical images of heat death were formulated in the framework of a static and closed universe. In an accelerated expanding universe with incompletely understood physics, speaking of an absolute "thermodynamic end" is speculative. What is materially observable and theoretically consistent today is the persistence of reorganisation processes at multiple scales, not a smooth approximation to a simple end state.

Criticism of the Simplistic Application of the Second Law

When Clausius writes that "the entropy of the universe tends to a maximum", the very notion of "universe" is quite different from the current one (Clausius 1865). The claim is powerful, but it depends on strong assumptions: that the universe is tractable as a global thermodynamic system, that its relevant properties are of the same kind as those of a gas in a box, that there are no qualitative changes in physics on very large or very long scales.

A philosophy that takes instability seriously does not need to deny the second law - it is enough to refuse to extrapolate its local statement into a total and definitive narrative about the structure of reality. Gravity, for example, allows configurations of low local entropy (stars, galaxies) to emerge simultaneously with an increase in global entropy. The expansion of space changes the conditions for applying thermodynamic purposes inherited from closed systems. The reality of irreversible processes does not automatically translate into the narrative of a uniform degradation towards nothingness.

Dissipative Structures: Order Far from Equilibrium

Classic examples of dissipative structures show that instability can be a source of organisation. In Bénard cells, heating beneath a fluid leads, beyond a certain threshold, to the formation of regular convective cells. In the Belousov - Zhabotinsky reaction, concentrations of chemical species oscillate in quasi-periodic cycles, with visible color changes. In both cases, small fluctuations are amplified by the nonlinearity of the dynamic equations, leading to states in which the system produces more entropy than in the homogeneous regime.

The lesson that matters here is not technical, but ontological: moving away from balance is not necessarily degrading oneself; is to make room for other operating regimes. The instability of the initial equilibrium is the condition for the possibility of new forms - as long as there is energy flowing through the system and paths to channel that energy into patterns.

Instability as a Creative Matrix

The text on excess showed that new forms emerge when the capacity of a system to withstand a certain intensity is exceeded. Linking this excess with instability, we can now say: the history of the universe is a history of bifurcations in which ancient forms crumble under the weight of the conditions that they themselves helped to produce. It is not the failure that produces the next form, but the operative excess of material conditions that makes the previous configuration unsustainable and forces matter to reorganise itself.

A massive star accumulates iron in the core until the weight can no longer be supported; the sudden collapse triggers the supernova. A supernova produces heavy elements and shock waves that trigger collapses in neighboring clouds, giving rise to new stars and planets.

A galaxy that grows through multiple mergers changes its mass distribution and internal dynamics to the point where it can no longer support a spiral disk; becomes elliptical. In each case, what seemed like stability turns out to be just another transitory configuration in a chain of reorganisations.

Kauffman argues that complex networks - genetic, metabolic, ecological - exhibit critical regimes in which changing some parameters leads to the emergence of new patterns of order (Kauffman 1995). There too, instability is productive: networks that are too rigid are sterile, networks that are too chaotic are unviable; It is in the vicinity of the limit between order and disorder that the capacity to generate novelty is maximum.

The ontological reading proposed here is clear: instability is not a failure to regret; It is the scene in which matter experiences new forms.

IV. Symbolic Inscription of Instability

The instability of material forms does not eliminate the need for symbolic stabilization; rather, it makes it indispensable. Natural languages, sciences, philosophies and institutions need to treat certain configurations as relatively stable in order to operate.

We call a vast set of objects with diverse evolutionary histories a "star"; we classify "spiral galaxies" and "elliptical galaxies" as if they were fixed types; we write "mass of 1.989 × 10³⁰ kg" as if the value were an immovable property of the Sun.

These inscriptions function as temporary stabilization devices. For some centuries, Pluto was inscribed as a "planet"; When the astronomical community reorganises the criteria, the same material organisation becomes inscribed as a "dwarf planet". The material form did not undergo a sudden metamorphosis; it is the symbolic regime that has been reconfigured.

The same physical object can belong to different categories depending on the conceptual mesh that captures it. Cosmological models are another example. The Ptolemaic geocentric cosmos, the Copernican heliocentric cosmos, the Newtonian universe and the Einsteinian space-time are different ways of inscribing the set of astronomical phenomena.

Each model redesigns what counts as "center", what "movement" means, how "force" is articulated with "trajectory". Transitions between models are not just accumulations of data; they are profound symbolic reorganisations of the material instability that has always been there.

The text "From Brand to Inscription" distinguished between differentiated material organisations and symbolic brands. A stellar collapse, a merger of galaxies, a chemical oscillation are material organisations that may or may not be inscribed.

When the scientific community introduces categories such as "Type Ia supernova" or "major galactic merger collision", these organisations start to function as brands in a symbolic space: they become cut-up, comparable units, cumulative in series. Registration does not create material instability or prevent it; it only organises the way it becomes readable.

The symbolic operation is later, but not arbitrary. Material configurations constrain what can be reasonably inscribed. We can, for some time, insist on classifications or theories that no longer correspond well to the observed regularities, but these inscriptions degrade operationally: they lose predictive power, force ad hoc patches, accumulate tensions until they become unsustainable.

Symbolic reorganisation is not mechanically determined by material instability, but it is also not free from any link to reality. It is precisely at this point that the notion of truth must be rethought.

In this framework, truth does not coincide with the fixation of a supposedly definitive form, but with the operative consistency between symbolic inscriptions and metastable material regimes that can be reconstructed, tested and corrected. A theory is true as long as it manages to inscribe, with sufficient precision, the provisional regularities of certain unstable processes - and loses this status when these regularities shift or when another inscription proves more capable of accompanying the material reorganisation.

There is no truth as a correspondence to an essence; there is truth as rigorous traceability of instability processes.

This conception has ethical consequences. If the real is made up of unstable forms and continuous reorganisations, no norm can claim absolute validity disconnected from the material conditions that make it operative. Our legal, political or moral categories work like astronomical classifications: they provisionally stabilize a certain state of things, but need to be able to be rewritten when technical, ecological or social configurations change.

An ethics consistent with this framework is not based on timeless codes, but on the responsibility to reinscribe, at each relevant reorganisation, what counts as harm, care and justice.

The scientific revolutions described by Kuhn (1962) can thus be read as particular episodes of a more general phenomenon: the periodic need to reorganise the symbolic regime to regain contact with a reality that was never immobile.

What changes is not material instability - stars, galaxies, biosystems continue to reorganise themselves - but the way we decide to cut, name and articulate these processes. The symbolic response never encloses the real; it just makes it readable for a while.

Ethical responsibility is measured, in this framework, by the ability to recognize when the material reorganisation has already made the current inscriptions unfair, harmful or blind - and to take the risk of rewriting them.

Conclusion

Every form is unstable. Analysis of the large scales of physics - quantum, nuclear, stellar, galactic, cosmological - makes it philosophically very difficult to sustain, today, an ontology of eternal form that ignores this accumulated evidence.

It is not a question of replacing one dogma with another, nor of decreeing that "science has proven" the instability of reality. It is about rigorously assuming the convergence of multiple lines of evidence: nothing we observe, model and theorize suggests the existence of forms immune to reorganisation.

This widespread instability does not require catastrophist readings. It is not a death sentence on the universe, nor a celebration of dissolution for its own sake. It is the condition from which matter generates newness: stars die and, therefore, there is complex chemistry; galaxies collide and, therefore, there are periods of intense star formation; systems far from equilibrium vibrate, oscillate, bifurcate, and this is how dissipative structures, biosystems, ecologies become possible.

What tradition called "corruption" appears here as a stage in a process of reorganisation that never stops. There is no final form or definitive synthesis that will resolve, once and for all, the tension between order and disorder.

Contra Aristotle, there is no perfect way that everything should imitate. Contra Hegel, there is no absolute knowledge that collects all determinations within itself. Contra Parmenides, there is no static Being behind becoming: there is only matter in multiple organizational regimes, crossed by instabilities of varying degrees.

If all forms are unstable, the universe itself cannot be treated as a totalizable stable object. Any attempt to represent it as a single and closed "thing" presupposes a stabilization that matter does not seem willing to grant.

The impossibility of totalization manifests itself, firstly, as an epistemological problem - no finite description can fix a real in continuous reorganisation. But, if we take seriously the image of a universe in constant transformation that our best theories converge in tracing, it becomes philosophically consistent to affirm that there is no definitive and stable contour to which the representation could adhere once and for all.

What remains is excess matter, in constant reorganisation. Generating transitional forms that emerge from instability, persist in regimes of metastability and fall apart when the conditions that supported them cease to exist.

"No guarantee, no permanence, no rest. Form, understood as metastable equilibrium, is just a momentary pause in a much broader process: the continuous experimentation of matter with itself."