Recent articles

Perception is not the real

What our position allows us to see, and what it prevents us from perceiving

We live with the impression of gaining direct access to the world around us. We see a colour, hear a voice, recognise a face, assess a situation and quickly draw conclusions from what our senses transmit. This experience seems immediate. It nevertheless rests on a succession of selections.

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When the measure ends up replacing what it claims to measure

IQ measures cognitive performance, not intelligence as a whole

The intelligence quotient is often presented as a measure of intelligence. This formulation seems simple, almost obvious, yet it rests on a difficulty situated upstream of the test itself. Measuring intelligence as a whole first presupposes a sufficient definition of the phenomenon to which that word refers. That definition remains…

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Intelligence is not reducible to thinking

We often speak of intelligence starting from its most visible manifestations.

We often speak of intelligence starting from its most visible manifestations: reasoning, solving a problem, memorising, understanding quickly, handling language or constructing a demonstration. These capacities are part of it, but they do not cover the whole phenomenon. An experienced musician can adjust their gesture before having…

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The decoherence of our political system

When every decision can be rational and their sum no longer is

Each ministry, administration or level of government acts within a defined perimeter, with its own objectives, constraints and indicators. A decision can be rational at that scale and produce, when it interacts with other policies, consequences that no one would have chosen as a whole.

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Awareness does not change the past, it changes what we do with it

Seeing differently what we already knew

An awakening sometimes gives the impression of arising abruptly. Yet it has often been preparing for years. Memories, experiences, contradictions and reactions remain scattered in our minds for a long time, without forming an intelligible whole. Then a detail, a conversation, an unusual fatigue or a situation that repeats itself…

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What the sciences rediscover in the living

Scientific specialisation has made it possible to enter very deeply into the substance of the real.

Scientific specialisation has made it possible to enter very deeply into the substance of the real. A cell, a chemical reaction, a brain, a planet or an institution each call for different instruments and methods. This division has produced considerable precision. Certain difficulties appear when the observed behaviour depends…

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Psyche, body and over-adaptation

When the body ends up carrying what the environment no longer corrects

The tensions of a society do not stay locked inside its institutions, its budgets or its procedures. Part of them ends up reaching bodies. They alter sleep, attention, breathing, relationships, the capacity to recover, or simply the desire to continue certain activities. This transfer remains hard to measure because a person can keep…

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Temporal myopia

The present carries the consequences of the past; the future will carry those of the present.

What we live through today results in large part from decisions, behaviours and dynamics set in motion yesterday. What we will live through tomorrow is already being built in what we do today. The present carries the consequences of the past; the future will carry those of the present.

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Binary thinking

When simplifying the world ends up preventing us from understanding it

We need to simplify the world in order to live in it. Every second, the brain receives a quantity of information it would be impossible to examine with equal depth. It classifies, compares, recognises patterns, eliminates possibilities and produces shortcuts. This capacity is fundamental. Faced with an immediate danger, a lengthy…

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The Earth has never been motionless

Restoring the living without freezing its history

The Earth has never been a stable backdrop. Long before the appearance of human beings, continents drifted, oceans opened and closed, climates tipped, rivers changed their beds, forests migrated and species appeared, moved or disappeared. Some regions that are desert today knew savannahs, lakes and extensive drainage networks, while…

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Climate risks

From a snapshot of vulnerabilities to a genuinely dynamic governance

The IWEPS Foresight Paper no. 12, published in August 2026 under the title Measuring and governing climate risks: what is at stake?, marks an interesting development in the way adaptation is approached. Climate risks are described there as complex social-ecological phenomena, produced by the interactions between hazards, territories,…

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Matter, memory and knowledge

Articles and essays integrated in full text: each card opens a page on this site, with no link to an external file.

Matter, forms and cosmos

What the Universe preserves

Physical traces, information and the limits of historical reconstruction

The past leaves durable differences in the present: craters, strata, spectra, gravitational waves. These traces do not restore the event, but they preserve effects of it which, correctly interpreted, constrain historical inferences.

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It is not the numbers that are primary

How the constraints of space engender natural architectures

It is readily said that nature prefers certain numbers. The three of the triangle, the six of the honeycomb cell, the twelve of the fullerene recur often enough for one to suspect an intention, a signature or a hidden law. The observation that feeds this impression is correct. The interpretation is not. The numbers associated with…

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Closure, constraint and cosmos

Towards a comparative physics of autonomy

Terrestrial life is perhaps not life, but a local realisation of a more general logic: that of organisations which produce the conditions of their own continuation.

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From matter to living organisations

One grid for understanding the transitions of persistence

The appearance of hadrons can serve as a starting point for reconstructing the successive transformations of matter. This history goes beyond an inventory of the constituents present at each stage. The term transition of organisation describes the process more precisely. Constituents can keep their identity while entering into new…

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From cosmic organisation to the biological living

Channelled instability as a condition of persistence

Classical physics first advanced by isolating regularities, invariants and systems simple enough to be described mathematically. The mechanics of Galileo and Newton did not, however, assume that all systems tend toward equilibrium. An ideal mechanical system can oscillate, rotate or pursue its motion indefinitely without converging…

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A consequence of Euler, not a mysterious law

Proof of the formula Σ (6 − n) fₙ = 12 for a spherical trivalent network.

The formula Σ (6 − n) fₙ = 12 is neither an autonomous law nor a mysterious property of the number 12. It follows from Euler's formula applied to a cell decomposition of a closed surface, without boundary, of spherical topology, under a second decisive condition: the network is trivalent, that is, three edges meet at every vertex.…

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The Universe as material and historical memory

From trajectory dependence to the reconstruction of the past and the reuse of traces

Cosmic memory cannot be reduced to the general fact that the past contributes to producing the present. This article distinguishes three regimes. The first corresponds to trajectory dependence. The

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The Universe as an evolving organisation

Inhomogeneities, backreaction and the coevolution of matter and geometry

Abstract. The Universe possesses none of the functional criteria by which a living organism is identified. No global metabolism, no active boundary, no mechanism of repair and no finality are known for it. The comparison with the living nevertheless retains a heuristic value when it bears on a more general property: the emergence of a…

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Constraint as the matrix of form

One logic, several regimes of constraint

The 3 of the tilings, the 5 of the Platonic solids, the 12 of the fullerenes, the 0 of the torus and the orders 1, 2, 3, 4 and 6 of crystallography do not constitute a collection of privileged numbers. They appear as the results of different constraints that reduce the space of possibilities until only certain compatible…

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The number as the trace of an operation

Measurement, structure and the resistance of the real

We tend to treat numbers and measurements as though they belonged directly to things. We say that a structure « is 12 », that a crystal « has a 6-fold symmetry » or that an organism « chooses 5 ». Yet the real never delivers an isolated number. It presents an…

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The architectures of matter in the Universe

A hierarchy of organisation founded on composition, configuration, interactions and environment

Abstract. This article examines a precise idea: the forms of matter observed in the Universe can be organised into a nested hierarchy, each level being built from entities of the previous level while possessing properties that also depend on their arrangement, their interactions and the conditions of the medium. The demonstration…

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Relational persistence

From quantum fields to the living

Persistence here denotes the capacity of an organisation to retain a recognisable identity over a given duration. That identity may correspond to a quantum state, a bound structure or a sustained functioning. It depends on the constituents present, on their configuration, on the interaction regime and on the conditions of the medium.…

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QSO1: the disproportionate black hole

An object that unsettles the history of the first galaxies

Abell 2744-QSO1 combines three characteristics rarely observed in a single system. Its light comes from an epoch situated roughly 700 million years after the Big Bang, its black hole reaches nearly 50 million solar masses, and the stellar mass of its host galaxy remains lower than that of the black hole. The dynamical measurements…

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Level-1 hadronic stabilisation

An operationalised relational architecture: accessibility, formation and survival

We propose a phenomenological model of hadronic stabilisation in three stages: structural accessibility, effective formation within an evolving medium, and then persistence of the state or population formed. The minimal version uses a single QCD combination built from independent confinement and chirality indicators, explicitly…

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Apparent stability and the evolution of physical laws

What measurements permit us to conclude about constants and physical regimes.

Experiments describe physical regularities of remarkable stability. That stability does not, on its own, establish that the laws are eternal. Physics therefore distinguishes an observation — the absence of detected variation within a given domain — from a more general hypothesis about the origin or the immutability of the…

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The cosmic prior with degraded warrant

Why knowledge of the Big Bang also depends on the epoch from which one observes

Abstract This article distinguishes the cosmic prior — that is, the initial conditions and parameters that structure the history of the observable Universe — from the local evidential warrant that allows an observer to reconstruct that prior. In a ΛCDM Universe undergoing accelerated expansion, the Big Bang does not become less true…

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Living systems, persistence and autonomy

The architecture of passages

Viability, historicity, autonomy, functional memory, knowledge and responsibility

The sciences describe with growing precision physical transformations, living organisations, memory processes, forms of learning and the mechanisms by which knowledge is produced. The relations between these levels nevertheless remain exposed to two opposite errors: isolating them until their continuities become unintelligible, or…

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From organisational autonomy to reflexive autonomy

Dimensions, architectures and the regulation of transformability

An organisation can maintain its conditions of existence, preserve the effects of its history, adjust its functioning and increase its capacity for anticipation without thereby becoming reflexive in the strong sense. Organisational autonomy and reflexive autonomy must therefore be distinguished. The first concerns the capacity of a…

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Living systems: when flows leave traces

How far-from-equilibrium organisation makes regulation, memory and adaptation possible

A living cell and a cell whose activity has ceased can still contain, for a certain time, a large part of the same molecules. Yet their futures rapidly diverge. The first sustains ionic gradients, renews its components, regulates its exchanges and repairs part of its damage. In the second, these processes progressively cease to be…

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The living, or the invention of active persistence

From stable forms to matter able to rebuild and anticipate its own continuity

Matter can last in several ways. An atom persists through physical stability, a crystal through the cohesion of its structure, a flame or a cyclone through the maintenance of a flow. The living crosses a different threshold: it mobilises energy and matter to sustain its organisation, repair its components, reproduce and transmit a…

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The habitability of constraints

Toward a relational persistence of the real

The usual image answers spontaneously: in space-time. Events would take place within a prior framework, like objects set down on a stage. The laws would then describe the way these objects evolve within that container.

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Viability, closure and memory

Towards an organisational, dispositional and multidimensional characterisation of living systems

Defining living systems remains difficult because no isolated criterion seems sufficient. Metabolism excludes certain dormant forms when it is required as a permanent activity. Reproduction does not concern every organism taken individually. Darwinian evolution describes mainly the transformations of lineages. Regulation, memory and…

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Memory, knowledge and responsibility

Learning from the unforeseen

From simulated constraint to a politics of margin

Complexity does not mechanically produce innovation. It opens a space of exploration by multiplying competences, resources, memories, connections and possible trajectories. But it also engenders costs of its own: divergent interests, coordination delays, conflicts of interpretation, cross-dependencies and difficulties in rapidly…

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Material memory

Between informational dependence and organisational closure

Let us fix a system boundary S, a reference instant t, a descriptive resolution R, a past window P−Δ−(t), a present state XR(t) and a future window F+Δ+(t). The parameters Δ− and Δ+ designate respectively the temporal depth of the past considered and the future horizon over which the dependence is evaluated.

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From exosomatisation to reflexive autonomy

Externalised memory, cumulative culture and constitutive substitutability

Exosomatisation refers to the displacement of certain functions outside the biological body, towards tools, symbols, institutions and technical infrastructures. In human beings this process no longer concerns physical action alone. It affects memory, computation, representation, coordination and the transmission of knowledge.…

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The architectures of the real

Relations, representations and the resistance of the real

A resemblance between two forms does not suffice to establish what links them. It may come from a documented inspiration, a common ancestry, a convergence under constraint, a coincidence or an analogy constructed by the observer. Scientific representation belongs to another register. It rests on operations of measurement, an explicit…

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For a re-anchored knowledge

Twelve principles for keeping open the loop between the real, representation and revision

This manifesto calls neither for a return to knowledge without abstraction, nor for distrust of mathematics. It asserts that the power of a representation increases when it retains the memory of its conditions, its losses and its limits.

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We inherit the chaos of the Universe

From material historicity to reflexive consciousness

A theoretical proposal and an interdisciplinary research programme. The framework connects material historicity, living organisation, consciousness and freedom without supposing an elementary consciousness in all matter and without introducing any substance foreign to the physical world.

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We are accountable for part of the possible

When reflexivity makes responsibility possible

We are not at the centre of the Universe, and nothing indicates that reflexivity is its destination. On the cosmic scale, our appearance seems to answer no identifiable project. Stars form and disappear, galaxies evolve, matter is transformed according to regularities that appear neither to await our presence nor necessarily to…

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When reality becomes memory

From transformation to memory

Reality never presents itself as a collection of finished objects. Every structure carries the effects of the interactions, constraints and transformations that made it possible. Part of those effects disappears. Another part remains inscribed in trajectories, forms, compositions and relations. The present thus preserves a historical…

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Meeting one's history from the other side

The child, inheritance and the responsibility of transmitting

We readily tell the relation between adults and children as a downward movement. The former give life, transmit a language, values, a culture, habits and ways of inhabiting the world. They protect, educate, guide and accompany. The child receives, learns and builds itself. This reading grasps an essential dimension of transmission,…

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Foundations · Living systems and their constraints

Regime transitions are not a domain

Regime transitions are often treated as a sectoral topic: ecology, climate, finance, infrastructure. This framing is misleading. A regime transition is not a disciplinary theme. It is a structural behavior that emerges whenever a system combines nonlinearity, feedbacks, slow accumulations, finite constraints, and multi-scale…

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The structural mechanism described by Holling

The triad rigidity, brittleness, unexpected collapse is one of the most robust invariants in complex systems ecology since Holling. Yet it remains very poorly integrated into real-world practices.

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A transdisciplinary invariant of complex adaptive systems

The trajectory rigidity, brittleness, unexpected collapse is neither a metaphor nor a simple rhetorical motif. It describes a dynamic mechanism documented in ecology and socio-ecological systems, then found under convergent formulations in organizations, clinical psychology of overcontrol, and institutional governance.

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Panarchy and ORI-C

Panarchy, as formulated by Holling, Gunderson and their co-authors, describes a multi-scale mechanism of rigidification and tipping. ORI-C, for its part, proposes a contractual method for detecting regime transitions, based on measurable variables, canonical tests, and strict traceability.

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Demonstration through viability dynamics

A living system persists by keeping certain variables within limits compatible with its functioning. This viability depends on flows, regulations, margins and relations with the milieu. It provides a criterion for assessing models that claim to describe living systems.

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Accepting the Living as It Is

Accepting the living as it is, is not a moral posture. It is an act of lucidity. It means recognizing that life cannot be governed by the comfortable grammars of the mechanical, the linear, the clean and the controllable.

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Living systems bring frameworks down

A model of living systems must explain how an organisation maintains itself despite perturbations, exchanges with the milieu and its own transformations. This requirement does not disqualify any particular discipline. It reveals the limits of several simplifications when they become general explanations.

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Matter is organisable because it has degrees of freedom, constraints and pathways of dissipation

Matter can form durable organisations when its degrees of freedom are constrained by interactions and fed by flows. Living systems push this capacity further thanks to processes that maintain, repair and reproduce their organisation.

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Threshold dynamics and regime shifts

Abrupt changes of regime appear in many domains, from thermodynamics to living systems. They can present comparable signatures, such as hysteresis, scaling laws, avalanches or bifurcations. These resemblances allow a structured comparison without implying that the mechanisms are identical.

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Applications · Psyche, Climate, Systems

Psychic patterns as dissipative structures

An organism maintains its organisation thanks to continuous exchanges of matter and energy with its environment. It transforms resources, sustains gradients and dissipates heat in particular. This activity respects the second law of thermodynamics when the balance is taken over the organism and its milieu. The local order of living…

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Climate has always been unstable

Earth's climate has varied considerably over the course of its history. The geological and palaeoclimatic record bears witness to glacial periods, warmings, prolonged droughts and rapid shifts. This natural variability in no way diminishes the present role of human greenhouse-gas emissions. It is a reminder that a climate system can…

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When the logic of control breaks the living

Our societies have progressively extended a logic of mastery to realities that evolve through adaptation, interaction, feedback and emergence. This way of acting has produced remarkable results wherever a problem could be isolated and its parameters sufficiently stabilised. It shows its limits when faced with living, ecological or…

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A structural refusal to integrate the instability of the real

The term blindism is used here to designate a structural refusal to integrate information that calls a system's assumptions into question. The real evolves at several scales, retains the effects of its history, and can undergo thresholds or ruptures. A return to the previous state is never guaranteed.

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Between Survival and Individuation

For Freud, the decisive point is not simply the existence of unconscious contents. It is the dynamic nature of the unconscious. Certain contents become incompatible with the ego's economy. They are then kept out of the conscious field by an active operation of repression. But this exclusion is not a suppression. What is repressed…

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The Living Is Not Binary

For a long time, a certain way of speaking about the living imposed itself as self-evident. On one side, domination. On the other, cooperation. As if all of nature could be summed up in this double register. This formula has the advantage of simplicity. But precisely, that is its problem. It does not merely simplify reality. It…

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Thinking Reality Without Reifying It

Reality cannot be adequately grasped either as a set of blocks separated by absolute boundaries, or as an undifferentiated continuum in which all distinction would be illusory. It is made of gradients, but also of thresholds. Of plasticity, but also of constraints. Of transitions, but also of forms.

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Functional principle of systemic viability and the coherence of living systems

Starting postulate: the viability of a living system depends on its capacity to maintain a functional coherence throughout its transformations.

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Humanity Accelerates Its Mutation, But Still Ignores What It Must Become

We live in a paradoxical time. Never has humanity had such transformative power at its disposal. And yet, the more the world transforms, the more disoriented humans appear in the face of what they produce. The more their means grow, the more their capacity to inwardly orient this power seems to waver.

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Essays · Lucidity, Language, Consciousness

We Do Not Consume Matter. We Consume Differences

For, strictly speaking, we almost never consume matter itself. Atoms do not disappear. Carbon, iron, copper, nitrogen, phosphorus remain. What we actually destroy are not the elements. They are the differences that made them useful. Differences in concentration, organisation, chemical potential, fertility, stability. In a word: gradients.

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From Fault to Sovereignty: The Becomings of Lucidity

Lucidity is not merely a perceptual capacity. It is an economy of one's relationship to reality — a way of organising attention, tension, symbolisation and security in the face of what does not fit. It does not only describe what the subject sees. It engages the part that looks, the function this gaze serves, the psychic cost it…

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The Formation of Lucidity in an Incoherent Environment

The formation of lucidity in an incoherent environment follows a five-layer trajectory: axioms, initial conditions, adaptive operators, formation dynamics, and stabilisation-transmutation. Each layer does not merely have a descriptive function. It acts upon the next. The model must therefore be understood as processual.

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Those who come from incoherence

Inner clarity is not always built in a coherent environment. In some people it develops in contact with repeated gaps between words, gestures and the atmosphere they live in. The child then learns to observe variations of tone, silences and contradictions in order to reduce uncertainty.

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Manifesto of the human rupture

Living organisms maintain themselves through regulations that combine several levels. Some are local and distributed. Others rest on centres of coordination, hierarchies or global signals. Their coherence therefore does not come from a single principle, but from the articulation between interactions, memory, constraints and adjustments.

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Perspective Shifts in Science

Science advances neither by simple linear accumulation nor by pure historical arbitrariness. It progresses under constraint. That constraint is reality. A theoretical framework can organise, simplify, predict, unify. But it cannot make what resists it disappear indefinitely. At a certain point, anomalies accumulate, patches multiply,…

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From Equivocation to Mediation: Forms of Life, Regimes of Meaning and Translation

Semantic equivocation cannot be reduced to a contingent imperfection of ordinary language. It possesses a structural dimension, insofar as it proceeds from the inscription of every utterance within a determinate form of life. A word is never a simple signifier available in the abstraction of a lexical system. It is always caught up in…

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