Interdependence Claim

Felipe León's signature coinage for the bidirectional reciprocal-foundation thesis Merleau-Ponty draws from Saussure: instituted language requires speaking subjects for its existence qua social institution, AND speaking subjects require an instituted language to be able to communicate at all. Developed in "Intersubjectivity, Sociality, Institution: Perspectives from Merleau-Ponty" (2026 ch. 9). León's distinctive thesis: this Interdependence Claim is what blocks both Vincent Descombes's impersonal-holist drift (language as autonomous self-sufficient system that subordinates speakers) and naïve atomism (language as mere aggregate of individual speech acts), and is the philosophical content of MP's remark that "in the concept of institution we are seeking a solution to the difficulties found in the philosophy of consciousness." The instituting subject "is not a subject for whom sociality is experientially given, but rather a subject in whom sociality operates."

Key Points

The Interdependence Claim itself: MP, Le problème de la parole p. 62 — "[t]here is interdependence [...] between language [langue] and speech [parole]." The thesis has two halves:
- Speech requires instituted language: "instituted language has given us this prodigy of securing for us a given background of communication [un fond de communication]: i.e. the meaning of words is familiar to us [...] we are without difficulties in the person who employs them and she or he is in us" (Le problème 159).
- Instituted language requires speaking subjects: language "is system to the extent that it is taken up by a community of speaking subjects. Thus, speech is not subordinated to language, an effect of it, simple individual execution"; "[l]anguage is not an entity, and it only exists in the speaking subjects. […] it is speech which makes language evolve" (Le problème 60, 62).
Operating against Descombes' impersonal holism: Vincent Descombes (in The Institutions of Meaning, 2014) argues that "to pass from 'I' to 'we'" is impossible if you start with egological reflections — institutions provide the "common context" that makes cooperation possible, but at the cost of subordinating speakers to language as system. León grants the first step of Descombes' argument (institutions are required) but rejects the second (language autonomous from speakers).
Operating against naïve atomism: Equally rejects the view that language is "nothing but its aggregative realization in a conglomerate of speaking subjects." Aggregation cannot generate the normative common-meaning structure that even the dyadic encounter presupposes.
MP's middle ground via "coherent deformation": granting "the normative autonomy of language as a social institution" while preserving "the performative and transformative roles played by language users" — the figure of coherent-deformation is the mechanism by which individual variation does not compromise the stability of the encompassing system.
From constituting to instituting subject: the Interdependence Claim is the philosophical content of MP's paradigm shift. The constituting subject can be inherently individuated (independent of social background); the instituting subject cannot — it presupposes a background institution to be taken up and actualized. "[A]n instituting subject is able to coexist with another because the instituted is not the immediate reflection of the activity of the former" (I&P 76).
Sociality operates in the subject, not for the subject: León's concluding formulation. Institution decouples sociality from experiential disclosure: practices can be operative without being consciously experienced. This is what makes institution a "solution to the difficulties of philosophy of consciousness" (I&P 76).
Two notions of objective mind disambiguated: León distinguishes MP's PhP notion of esprit objectif (traces of absent subjects in cultural objects/landscapes — "objectified mind") from Descombes' Hegelian objektiver Geist (the system of institutions already operative in our thinking — "presence of the social in the mind of each of us"). The Interdependence Claim works with Descombes' sense, but resists Descombes' impersonal-holist conclusion.

Details

The dyadic-encounter inadequacy (León §1–§2)

The first move of the chapter: even the minimal face-to-face encounter, when it counts as more than mutual perception, presupposes an institutional background of common meanings — most paradigmatically a natural language. This is the major break with the "intersubjective approach to sociality" (Husserl/Zahavi) that takes the dyadic face-to-face as the nucleus of human sociality.

León cites Descombes (Relation Intersubjective et Relation Sociale p. 128): "to pass from 'I' to 'we', that is what happens to a thinking subject when it begins with egological reflections [...] and then discovers that it is in the process of thinking something with a 'co-thinker,' or having the experience of something with a 'co-experiencer.' Such a discovery is supposed to socialize an individual that has been defined from the beginning outside of any social milieu."

The critique: socialization-by-discovery cannot work, because the dyadic encounter that supposedly socializes is itself parasitic on a holistic institutional background. There is no intersubjective face-to-face encounter — as distinguished from unilateral acts of perception of one another — without an institutional background that makes it possible.

The dialogue-aporia in PhP (León §3)

Even within MP's PhP, León identifies the constitutive distinction between unilateral/solitary social understandings (perception of others, perception of cultural objects) and forms of sociality that essentially co-involve other subjects:

"In the experience of dialogue, a common ground is constituted between me and another; my thought and his form a single fabric, my words and those of my interlocutor are called forth by the state of the discussion and are inserted into a shared operation of which neither of us is the creator. Here there is a being-shared-by-two […] We are, for each other, collaborators in perfect reciprocity: our perspectives slip into each other, we coexist through a single world." (PhP 370)

But MP himself (PhP 373) names the residual aporia: "This self, who is the witness of every actual communication, and without which the communication would be unaware of itself and thus would not be communication at all, seems to prevent any resolution of the problem of others. Here we see a lived solipsism that cannot be transcended."

The PhP aporia of "lived solipsism" is what institution is later supposed to dissolve.

Institution as paradigm shift (León §4)

León's reading of MP's institution-concept as a paradigm shift (not mere development) from Husserl's Stiftung:

The constituting subject is anchored in first-person singular perspective and "lacks the socio-normative traction" of the instituting subject.
The instituting subject "presupposes a background institution to be taken up and actualized" and "cannot be inherently individuated, independently of an institutional background."
The instituted is described as a "hinge, the consequence and the guarantee of our belonging to one self-same world" (I&P 76).

León argues this paradigm shift is what authorizes MP's own remark that "in the concept of institution we are seeking a solution to the difficulties found in the philosophy of consciousness." The shift from constitution to institution is what dissolves the PhP dialogue-aporia.

The Interdependence Claim itself (León §4)

The chapter's central thesis. The Interdependence Claim has two halves:

Speakers require instituted language (the relatively uncontroversial half): MP, Le problème de la parole 159 — "instituted language has given us this prodigy of securing for us a given background of communication"; "the meaning of words is familiar to us [...] we are without difficulties in the person who employs them and she or he is in us"; Le problème 208 — "To speak: the will of being understood, the speaker presupposes an addressee, and both of them a medium that is precisely language as a foundation of community."
Instituted language requires speaking subjects (the philosophically distinctive half): MP, Le problème de la parole 60, 62 — "[L]anguage is not an entity, and it only exists in the speaking subjects. […] it is speech which makes language evolve"; "[language] is system to the extent that it is taken up by a community of speaking subjects. Thus, speech is not subordinated to language, an effect of it, simple individual execution."

The two halves together rule out both Descombesian impersonal holism (which gets only the first half right) and atomism (which gets only the second half right). MP's distinctive contribution is the bidirectional foundation.

Coherent deformation as the mechanism (León §4)

What makes the bidirectional foundation operate without collapsing into circularity? León's answer: coherent-deformation. Speech transforms language without breaking it; language enables speech without subordinating it. The figure of "coherent deformation" (from MP's Prose of the World) names exactly this co-determination: individual variation does not compromise the stability of the encompassing system, and the encompassing system does not erase individual contribution.

The Two notions of "objective mind" (León §2)

A philological refinement. Objective mind in MP's PhP sense (= esprit objectif) names the traces of absent subjects in cultural objects/landscapes — what Aron and Descombes call "objectified mind." This is what Husserl's "personalistic attitude" registers, and is not what carries the institutional weight of the Interdependence Claim.

Descombes' objektiver Geist (Hegelian sense) is something else: the system of institutions already operative in our language and thinking, the "presence of the social in the mind of each of us":

"objectified mind corresponds to the fact that we live in a world that others lived in before us (these others are at first foreign to us). By contrast, objective mind is the opposite: it is not the trace of absent people within our field of perception; it is the presence of the social in the mind of each of us." (Descombes, Institutions of Meaning 294)

The Interdependence Claim works with the Hegelian sense (objective mind / objektiver Geist), but resists Descombes' move from there to impersonal holism.

What the Concept Does

Solves the PhP "lived solipsism" aporia. MP's own diagnosis (PhP 373) that the witnessing-self prevents resolution of the problem of others is dissolved by the Interdependence Claim: the witnessing-self is itself an instituting subject, already inhabiting an institutional background.
Operationalizes MP's "solution to the difficulties of philosophy of consciousness." The shift from constituting to instituting subject is the philosophical content of I&P 76; the Interdependence Claim is what that shift consists in.
Provides a stable middle ground between holism and atomism. Most contemporary philosophy of language oscillates between Descombesian holism (which subordinates speakers) and atomism (which dissolves the system). The Interdependence Claim is genuinely two-directional.
Disambiguates two senses of "objective mind." The MP-PhP/Aron sense (esprit objectif = objectified mind) and the Hegelian sense (objektiver Geist = objective mind / presence of the social) are non-equivalent; conflating them blocks the Interdependence Claim.
Refounds intersubjectivity on institution rather than face-to-face encounter. The dyadic encounter is parasitic on institutional background, not foundational of sociality.

What It Rejects

The intersubjective approach to sociality (Husserl, Zahavi): the dyadic face-to-face as nucleus of sociality. Cannot account for sociality without already presupposing institutional background.
Husserlian "communicative community" as foundational unit: cannot do the work it is supposed to do.
Vincent Descombes' impersonal holism: institution as autonomous external authority that subordinates speakers. Gets the first half of the Interdependence Claim but misses the second.
Atomistic / aggregative accounts of language: language as mere aggregate of individual speech acts. Gets the second half but misses the first.
Husserlian "common mind" readings (Caminada): readings that try to vindicate sociality within an enriched intentionality framework. León: "at best, far from convincing and, at worst, question-begging."
The view that all sociality must be cashed out as a phenomenon disclosed for consciousness: institution decouples sociality from experiential disclosure.
Stein-style empathy as foundational: marginalizes language; empathy descriptions "evidentialize" the linguistic-communicative aspect rather than registering it.

Stakes

If the Interdependence Claim is accepted:

The wiki's intersubjectivity page acquires a primary thesis distinguishing intersubjectivity (dyadic) from sociality (institution-mediated). Friction with any page conflating them.
The wiki's institution-stiftung page should record the León thesis that institution is paradigm shift beyond Husserlian Stiftung, not mere development. (See parallel claim in Halák, Pagan, Mendoza-Canales.)
Vincent Descombes acquires a wiki-home as a key foil for MP-on-language. The Institutions of Meaning (2014) argument is the canonical contemporary impersonal-holist alternative.
MP's "solution to difficulties of philosophy of consciousness" (I&P 76) gains a precise interpretive anchor.
The agnosia-mp / saturated-attention thread (Chouraqui ch. 10) connects to the Interdependence Claim: political agency as vivre-selon is the political analogue of speech as instituting in instituted language.

Problem-Space

The Interdependence Claim addresses the recurring problem: how can a social institution depend on speakers AND have normative authority over them at the same time? The problem is acute for any philosophy of language that wants both: (a) the system has some autonomy from individual contribution; (b) individual contribution is not merely subordinate. The classical attempts:

Strong holism (Descombes; structuralism): the system is autonomous; speakers are mere occasions. Fails because the system cannot in fact persist without speakers.
Strong atomism (some philosophy of language): the system is just the sum of speech acts. Fails because aggregation cannot generate the normative-common-meaning structure even the dyadic encounter presupposes.
Weak co-determination (some pragmatics, sociolinguistics): system and speakers shape each other in some loose way. Fails because the "loose way" is what needs articulation; without articulation, the position collapses to whichever pole presses harder.

The Interdependence Claim is a fourth option: bidirectional reciprocal-foundation, with coherent-deformation as the operative mechanism. Speakers can be foundationally implicated in the system while the system retains normative authority over them — because the foundation is bidirectional, not unidirectional.

Connections

is the language-register of institution / stiftung — instituted language is one institution; the Interdependence Claim names institution's general structure
operates via coherent-deformation — the mechanism that lets bidirectional foundation work without collapsing to circularity
resolves the lived-solipsism aporia of PhP III (if such a page exists) — institution dissolves the aporia
contests Descombes' impersonal holism — Descombes gets the first half right, misses the second
contrasts with the intersubjective-approach-to-sociality (if exists) — dyadic encounter is parasitic on institutional background
applies MP's I&P 76 ("solution to difficulties of philosophy of consciousness") to sociality and language
is the philosophical content of the constituting-vs-instituting subject paradigm shift — see claims#institution-as-paradigm-shift-from-stiftung-to-instituting-subject (live)
converges with chiasm — the bidirectional foundation has chiasmic structure (each pole envelops the other)
informs language-mp
informs sociality (if exists)

Open Questions

Is the bidirectional structure León attributes to the Interdependence Claim genuinely symmetric? The "language requires speakers" half is well-evidenced (the Saussure/MP quote at Le problème p. 60); but its philosophical force — that this gives speakers institutional standing rather than mere causal/historical contribution — is largely asserted via the constituting/instituting distinction rather than argued in detail.
The footnote 38 admission that "it remains unclear how an atomistic and a non-atomistic approach to the individuation of subjectivity could co-exist in a unitary account of the latter" is a real concession. The chapter does not actually demonstrate the instability of the dual-level Zahavian position; it only asserts it.
The relation between MP's institution and Descombes' "common mind / objektiver Geist" needs further articulation. They are different in ways León does not fully unpack (different inheritance lines: Husserl-MP vs Hegel-Aron-Descombes).
How does coherent-deformation actually mediate the Interdependence Claim? León names the mechanism but does not run a worked-through case showing its operation.
The chapter's engagement with Zahavi's intersubjective approach is largely critical; the question of how much of Zahavi's account is preserved and how much rejected is not adjudicated.

Sources

mendoza-canales-2026-institution-ontology-politics — chapter 9 (León). The most systematic single statement of the Interdependence Claim.
merleau-ponty-1973-prose-of-the-world — pp. 113 (coherent deformation), 139 (encroachment via shared institution), 141 (the singular-and-shared structure).
merleau-ponty-2010-institution-and-passivity — p. 76 (the "solution to difficulties of philosophy of consciousness" passage; "instituting subject is able to coexist with another"; "the instituted exists between others and myself, like a hinge"); p. 77 (institution definition: "events which deposit a sense in me, not just as something surviving or as a residue, but as the call to follow").
merleau-ponty-1945-phenomenology-of-perception — pp. 370 (the "single fabric" dialogue passage); 373 (the "lived solipsism" aporia).
Le problème de la parole (MêtisPresses 2020 edition) — pp. 60, 62 (the Saussure-via-MP key passages); 159 (instituted language as background of communication); 208 (the speaker presupposes an addressee).

Synthetic Claims

The synthetic interpretive layer (wiki/claims.md) articulates three claims for which this page is a Wiki home — two at live and one at candidate. Live and candidate claims are cited with provisional framing per CLAUDE.md §Claims Register Format.

live claim, see claims#interdependence-claim-bidirectional — León's reading of Saussure-via-MP yields a genuinely two-directional thesis (instituted language ↔ speaking subjects) that occupies a stable middle ground between Descombesian impersonal holism and atomistic aggregation; this bidirectionality is what licenses MP's claim that institution is "a solution to the difficulties of philosophy of consciousness." Promoted from candidate to live 2026-05-05 (Phase 8 ninth run).
live claim, see claims#institution-as-paradigm-shift-from-stiftung-to-instituting-subject — MP's notion of institution (1954–55) is best read not as a development of Husserlian Stiftung but as a paradigm shift from the constituting subject to the instituting subject. (Cross-chapter convergence with León §4, Pagan §3, Mendoza-Canales §1, Halák §2.1.)
live claim, see claims#dyadic-encounter-presupposes-institution (promoted 2026-05-09) — per León (M-C 2026 Ch 9 §1–§2), even the minimal face-to-face encounter, when it counts as more than mutual perception, presupposes an institutional background of common meanings — paradigmatically a natural language. The dyadic situation is parasitic on holism, not holism out of dyads. Bears on this page as the negative corrective complement to interdependence-claim-bidirectional: bidirectionality is not just an enrichment of intersubjective phenomenology but a replacement of the dyadic foundation. Counterpressure retained: Descombes / Aron / Taylor framing not in raw/ and the Husserlian rejoinder is contested but not decisively refuted.