Why Information and Integration are not enough? A constitutive critique to computational models

Integrated Information Theory (IIT) is arguably the most formally developed theory of consciousness available today. Proposed by Giulio Tononi, it defines consciousness as integrated information, quantified as Φ (phi), and holds that a system is conscious to the degree that its parts are informationally integrated into an irreducible whole. IIT is only one example of a broader class of computational models built on information and integration, but it is the most explicit in treating integration as foundational.

The following argues that integration is not sufficient to serve as the foundation of consciousness. Integration presupposes two conditions it cannot supply - cohesion and differentiation - which are co-dependent facets of one field, and without which integration has nothing to operate on.

Contrast, Relation, and Co-presence

Contrast is typically treated as the basis of differentiation. I argue that the moment a contrast is invoked, a minimal relational condition is already implied. For a contrast to appear, A and B must be jointly accessible within a common frame. Without such co-presence, no contrast can exist as difference. Therefore, differentiation does not precede relation but presupposes it: to differ is always to differ from something.

This is not a minor technicality. It concerns what is logically required before information can exist at all. Information, in any formal or intuitive sense, requires that states be distinguishable. Distinguishability requires contrast. And contrast requires that the elements in question are already given together within a condition that allows comparison. If they are not held together, if there is no common frame, then no contrast can appear, not even in the abstract.

But the reverse is equally true. Relation without differentiation is empty, there is nothing to relate. Holding elements together in a common frame means nothing if there are no distinguishable elements to hold. Co-presence without distinction is featureless; distinction without co-presence is scattered. Neither can exist without the other.

What this reveals is that differentiation and relation - and the co-presence that makes relation possible - arise together. They are co-dependent. Differentiation requires that elements be held in relation. Relation requires that there be distinguishable elements to relate. Neither precedes the other. They are two facets of one condition.

What Cohesion Names

This co-dependent condition, in which elements are both held together and distinguished, requires a name. I call its relational aspect cohesion: the holding-together that makes co-presence possible. And its distinguishing aspect differentiation: the creating of contrasts that makes information possible.

Cohesion and differentiation are not two separate things that get combined. They are two facets of one field. Cohesion holds relation - it is what maintains unity across difference. Differentiation creates distinction - it is what makes anything distinguishable at all. One cannot differentiate without something being held in relation, and one cannot hold relation without something being distinguished. But holding and distinguishing are not the same operation.

This is not a vague addition. Cohesion names the relational aspect of the field, the holding-together without which elements cannot be jointly accessible. Differentiation names its distinguishing aspect: the contrast-creating without which nothing can be told apart. Together, they name the co-dependent condition that must already be in place for information to exist at all.

Integration Cannot Supply Its Own Preconditions

Integration operates on elements that are already differentiated and already in relation - already held together and already distinguished. It binds what is already given as distinct and co-present, but it does not, and cannot, account for why those elements are co-present and distinct in the first place.

This condition cannot be supplied by integration, because integration already presupposes elements that are both related and distinguishable. Integration therefore presupposes the very condition it would need to explain. To integrate is to unify across differences, but differences must already exist, and they must already be held within a common condition, for integration to have anything to work with.

The co-dependent condition of cohesion and differentiation is what makes integration possible. Integration is their coupling - the ongoing process that maintains their relation, but the coupling cannot produce what it couples. Integration presupposes cohesion and differentiation and cannot supply either.

The Frame and the Water

Consider a frame and a body of water. To differentiate them - solid vs fluid, fixed boundaries vs adaptable boundaries - one must already hold them in relation. Now, how does one integrate frame with water? Let's throw the frame in the water. Both are internally integrated and stable when taken separately, but a plastic frame and a wooden frame interact differently with water. A plastic frame resists penetration and maintains its form. A wooden frame is porous: water penetrates it and gradually disrupts the relations between its components.

Despite each being integrated on its own, the outcome of their integration is constrained by the character of the difference between their components - by the relation that precedes integration. The specific way integration unfolds between two systems is not determined by integration itself, but by the prior relational and differential character of the elements involved. Integration does not dictate the terms of its own operation. It inherits them.

The Scope of the Objection

This objection is not limited to IIT specifically. It applies to any framework that treats information as its primitive or foundational concept. If information requires differentiation, and differentiation requires relation, and relation and differentiation are co-dependent facets of one condition that neither information nor integration can supply, then no information-first ontology can be self-grounding. The structural point holds for all computational models: information cannot be the starting point of an account of consciousness, because information already presupposes conditions it does not contain.

Co-dependence and Asymmetry

I argue that cohesion and differentiation are co-dependent. Neither can stand without the other. Cohesion without differentiation collapses into featureless indistinction, a unity with nothing distinguished within it, indistinguishable from nothing. Differentiation without cohesion scatters into unrelated fragments that cannot constitute anything. They are two facets of one field, and neither is prior to the other.

However, co-dependence does not mean symmetry. Their functions are not interchangeable. Cohesion holds relation: it is what maintains unity across difference. Differentiation creates distinction: it is what makes anything distinguishable at all. One cannot differentiate without something being held in relation, and one cannot hold relation without something being distinguished, but holding and distinguishing are not the same operation.

The failure modes confirm this functional asymmetry. Differentiation without cohesion does not simply fail to exist, it degrades into fragmentation, scattering, elements that are distinct but unrelated, present but unnavigable. Cohesion without differentiation, by contrast, does not degrade into a corresponding state, it simply cannot appear at all, because there is nothing within it to register its own holding-together. Fragmentation is the loss of cohesion while differentiation remains partially operative. There is no corresponding condition in which cohesion is operative and differentiation is entirely absent, because such a state would be experientially invisible, indistinguishable from nothing.

This means cohesion and differentiation are co-dependent for existence, but asymmetric in function. They are two facets of one field, neither prior to the other, but not interchangeable in what they do. Co-dependence and asymmetry are not contradictory. Two things can require each other while having different structural roles.

Integration is their coupling - the ongoing maintenance of their relation. It is constitutively dependent on cohesion and differentiation in a way they are not dependent on it. This is not a temporal claim. Cohesion does not exist first in time, followed by differentiation, followed by integration. All three are always co-present in any actual system. But their constitutive dependencies are asymmetric: integration requires cohesion and differentiation; cohesion and differentiation require each other; and within that co-dependence, their functional roles are not interchangeable: cohesion holds relation, differentiation creates distinction, and neither can do what the other does.

What This Means

I argue that any theory of consciousness built on information and integration alone is structurally incomplete. Such theories correctly identify essential features of conscious systems, that they are informationally rich and that their parts are unified, but they mistake these features for the foundation. The foundation lies in the co-dependence of cohesion and differentiation, with integration as the process that maintains their relation.

This does not make IIT wrong. It makes it incomplete in a specific and identifiable way. The correction is not to discard integration but to recognise that it cannot ground itself, and that the conditions it presupposes - cohesion and differentiation - must be included as co-foundational in any account of consciousness that aspires to be explanatory rather than merely descriptive.

If cohesion and differentiation are co-foundational, then what integration actually is - its structural character, its relation to cohesion and differentiation, and what it means for integration to succeed or fail - also requires re-examination. IIT treats integration as a foundational, independent property. I argue that it is neither foundational nor independent, but the dynamic coupling of cohesion and differentiation. What follows from that reframing is the subject of a separate account.