The paper presents an extended argument for the claim that mental content impacts the computational individuation of a cognitive system (section 2). The argument starts with the observation that a cognitive system may simultaneously implement a variety of different syntactic structures, but that the computational identity of a cognitive system is given by only one of these implemented syntactic structures. It is then asked what are the features that determine which of implemented syntactic structures is the computational (...) structure of the system, and it is contended that these features are certain aspects of mental content. The argument helps (section 3) to reassess the thesis known as computational externalism, namely, the thesis that computational theories of cognition make essential reference to features in the individual's environment. It is suggested that the familiar arguments for computational externalism?which rest on thought experiments and on exegesis of Marr's theories of vision?are unconvincing, but that they can be improved. A reconstruction of the visex/audex thought experiment is offered in section 3.1. An outline of a novel interpretation of Marr's theories of vision is presented in section 3.2. The corrected arguments support the claim that computational theories of cognition are intentional. Computational externalism is still pending, however, upon the thesis that psychological content is extrinsic. (shrink)

In componential analysis, word meanings are (partly) decomposed into other meanings, and semantic and syntactic markers. Although a theory of word meaning based on such semantic decompositions remains compatible with the linguistic labor division thesis, it is not compatible with Kripke/Putnam-style indexical externalism. Instead of abandoning indexical externalism, a Separation Thesis is defended according to which lexical meaning need not enter the truth-conditional content of an utterance. Lexical meaning reflects beliefs about word meaning shared in a speaker (...) community, and these may rest on possibly erroneous world-level theories. It is argued that this type of lexical meaning is indispensable for explaining word composition processes and the rationality of metalinguistic disputes. (shrink)

Externalism is the view that the intentional content of a mental state supervenes on its relations to objects in the extramental world. Nativism is the view that some of the innate states of the mind/brain have intentional content. I consider both “causal” and “nomic” versions of externalism, and argue that both are incompatible with nativism. I consider likely candidates for a compatibilist position – a nativism of “narrow” representational states, and a nativism of the contentless formal “vehicles” of (...) representational states. I argue that “narrow nativism” is either too implausible to appeal to the nativist – because it entails that innate representational states are lost as the mind becomes more experienced, or too costly to appeal to the externalist – because a reasonable version of it requires the analytic-synthetic distinction. Finally, I argue that “syntactic nativism” is indistinguishable from classical anti-nativist empiricism, given the latter’s broad tolerance for innate implementation of psychological principles and mechanisms. (shrink)

It has been argued that Psychological Externalism is irrelevant to psychology. The grounds for this are that PE fails to individuate intentional states in accord with causal power, and that psychology is primarily interested in the causal roles of psychological states. It is also claimed that one can individuate psychological states via their syntactic structure in some internal "language of thought". This syntactic structure is an internal feature of psychological states and thus provides a key to their (...) causal powers. I argue that in fact any syntactic structure deserving the name will require an external individuation no less than the semantic features of psychological states. (shrink)

The concept of narrow content is still under discussion in the debate over mental representation. In the paper, one-factor dimensional accounts of representation are analyzed, particularly the case of Fodor's methodological solipsism. In methodological solipsism, semantic properties of content are arguably eliminated in favor of syntactic ones. If “narrow content” means content properties independent of external factors to a system (as in Segal's view), the concept of content becomes elusive. Moreover, important conceptual problems with one-factor dimensional account are pointed (...) out as a result of analysis arguments presented by J. Searle, S. Harnad and T. Burge. Furthermore, these problems are illustrated with psychological and ethological examples. Although understanding content as partially independent from contextual factors allows theorists to preserve content properties, it seems that understanding content in total abstraction from external factors of these properties is implausible. As a result, internalism is rejected in favor of externalism. (shrink)

The liar paradox can be shown semantically defective if we distinguish the /sentence/ ''snow is white' is true' from the /string/ that constitutes it. This paper develops the String-to-Sentence Theory of Truth---for short, String Theory---according to which, while the /string/ contains the string 'true', the /sentence/ is merely 'snow is white', which contains no such occurrence: more generally, a string like 'S is true' constitutes, relative to an assessor, the sentence which, to the assessor, means the same as S. So (...) suppose we attempt to define a singular term 'L' referring to the sentence 'not: L is true'. Relative to an assessor, 'L' refers to the sentence negating the assessor's sentence meaning the same as the referent of 'L'. So the referent of 'L' means the same as its negation. But no sentence means the same as its negation, so 'L' does not refer. The act of naming with which the liar paradox commences is semantically defective; so there can be no liar paradox. (shrink)

The paper is devoted to a discussion and critical evaluation of antisceptical arguments in epistemology that are based on causal theory of reference, with the special focus upon the revised version of the Hilary Putnam‘s Brain-in-a-Vat argument presented by Olaf Müller. Müller claims that his argument is based on the metaphysically neutral principles of semantic externalism and disquotation, however more thorough analysis of these principles and of the possibility to use them for antisceptical purposes reveals the flaw in his (...) argument. It seems that Müller reaches his conclusion by confusing the syntactically identical, though semantically distinct utterances in BIV language, non-BIV language, and metalanguage. The reconstruction and analysis of Müller‘s argument shows that his argument, provided that its premises are formulated carefully so as not to beg the question against the sceptic, fails to establish anything more than the original version provided by Putnam.Keywords: scepticism, Olaf Müller, semantic externalism, disquotation, brain-in-a-Vat. (shrink)

Formal semantics is an approach to SEMANTICS1, the study of meaning, with roots in logic, the philosophy of language, and linguistics, and since the 1980’s a core area of linguistic theory. Characteristics of formal semantics to be treated in this article include the following: Formal semanticists treat meaning as mind-independent (though abstract), contrasting with the view of meanings as concepts “in the head” (see I-LANGUAGE AND E-LANGUAGE and MEANING EXTERNALISM AND INTERNALISM); formal semanticists distinguish semantics from knowledge of semantics (...) (Lewis 1975, Cresswell 1978), which has consequences for the notion of semantic COMPETENCE. A central part of the meaning of a sentence on this approach is its TRUTH CONDITIONS, and most although not all formal semantics is model-theoretic, relating linguistic expressions to model-theoretically constructed semantic values cast in terms of truth, REFERENCE, and possible worlds. This sets formal semantics apart from approaches which view semantics as relating a sentence just to a representation on another linguistic “level” (LOGICAL FORM) or a representation in an innate LANGUAGE OF THOUGHT. The formal semanticist could accept such representations as an aspect of semantics but would insist on asking what the model-theoretic semantic interpretation of the given representationlanguage is (Lewis 1970). Formal semantics is centrally concerned with COMPOSITIONALITY at the SYNTAX-SEMANTICS INTERFACE, how the meanings of larger constituents are built up from the meanings of their parts on the basis of their syntactic structure, and with the relation between compositional SENTENCE MEANING and meaning in discourse. (shrink)

Jackendoff defends a mentalist approach to semantics that investigates conceptual structures in the mind/brain and their interfaces with other structures, including specifically linguistic structures responsible for syntactic and phonological competence. He contrasts this approach with one that seeks to characterize the intentional relations between expressions and objects in the world. The latter, he argues, cannot be reconciled with mentalism. He objects in particular that intentionality cannot be naturalized and that the relevant notion of object is suspect. I critically discuss (...) these objections, arguing in part that Jackendoff’s position rests on questionable philosophical assumptions. (shrink)

There is, currently, much resistance to so-maligned Cartesian or internalist theories of meaning and mental content in the philosophies of mind and language. Internalist semantics tend to view the meaning of psychological attitudes as primary and that of public language items as essentially derivative. Moreover, internalists regard meaning as determined by internal facts--mental representations, mental sentences, conceptual roles, cognitive procedures--to name the favourites. In opposition, externalists argue that meaning is determined by external causal and social factors. They claim to provide (...) a more naturalistic theory of meaning; one more amenable to the sciences. I shall argue, however, that externalism is, at present, deeply flawed. ;As an internalist, I am less concerned by social versions of externalism for as I argue in chapter 2, it is not obvious that the sociolinguistic hypothesis is incompatible with internalism. The focus of this thesis is on causal theories of meaning and mental content. ;In chapter 1, I demonstrate, by means of the Swampman thought experiment, some of the absurd consequences of holding both that causal interaction with objects is a necessary condition for being able to have thoughts about those objects, and that causal interaction, in general, is a necessary condition for thought at all. The topic for chapter 2 is: To what extent and how does the res itself contribute to the meaning of a referring term in a language? I argue that the only coherent form of causal externalism is one that presupposes the truth of essentialism. In chapter 3 the legitimacy of the connection between the causal theory of reference and essentialism is called into question. ;If semantic relations are primarily causal they ought to be ripe for naturalistic reduction. I examine three attempts to get such reductions underway, in chapter 4. In chapter 5, I deign to speak for Descartes, risky though that be, and try to defend him against his twentieth century adversaries' charge that he is the founder of individualism--the most extreme of internalisms for it claims that the notion of psychological content is essentially a syntactic notion. ;In chapter 6, I return to the swamp and argue for an internalist conception of psychological content. To the charge that internalists cannot answer questions of the form: What makes a thought about one thing rather than another?, I argue that we must reconceive the role of thought in locating us in the world. The externalists have it backward; it is not the world which fixes our thought but our thought which fixes our relation to the world. In the conclusion, chapter 7, I make some remarks about the two traditional problems which I see as having divided philosophers into internalists and externalists: the problem of synonymy and the singularity question. Externalists have often thought themselves to have the upper hand in answering the latter, whilst dismissing the former as a non-problem. I argue, on the one hand, that synonymy is a real problem and that internalists are more likely to be able to explain it. On the other hand, I argue that externalists do not fare as well on the singularity question as they like to think. (shrink)

Words appear to be denizens of the external world or, at any rate, not wholly mental, unlike our pains. It is the norm for philosophical accounts of words to reflect this appearance by offering various socio-cultural conditions to which an adequate account of wordhood must cleave. The paper argues, to the contrary, that an adequate account of word phenomena need avert to nothing other than individual psychology along with potential external factors that in-themselves do not count as linguistic. My principal (...) leverage will be that, by everyone’s lights, whatever words are, they are syntactically combinable and possess structural properties. But such conditions cannot be externally realised; instead, they are aspects of our internally realised cognitive capacity. It will also be argued, however, that the position is consistent with much of our common lore about words, albeit sans an externalist linguistic ontology. (shrink)

In this paper I offer an explanation of the ineffability (linguistic inexpressibility) of sensory experiences. My explanation is put in terms of computational functionalism and standard externalist theories of representational content. As I will argue, many or most sensory experiences are representational states without constituent structure. This property determines both the representational function these states can serve and the information that can be extracted from them when they are processed. Sensory experiences can indicate the presence of certain external states of (...) affairs but they cannot convey any more information about them than that. So, format- or code-conversion mechanisms that link different systems of representation (linguistic and perceptual) to each other will fail to extract any relevant information from sensory experiences that could be coded in language. They only way to establish specific roles for sensory experiences in communication and the organization of behavior is to attach to them, by associative links, words, or other behavioral responses. If a sensory experience has no linguistic label associated to it in a particular subject, then no linguistic description can token, or activate, that state in the subject. In other words, no linguistic description can cause a subject to undergo an unlabeled perceptual state. On the contrary, complex, or syntactically structured perceptual states can be built up, on the basis of descriptions, by mechanisms of constructive imagination (conceived here as one sort of format conversion). It is this difference between complex and unstructured representational states that gives us an understanding of the phenomenon we call the ineffability of qualia. (shrink)

As a philosophical paradigm, differential heterogenesis offers us a novel descriptive vantage with which to inscribe Deleuze’s virtuality within the terrain of “differential becoming,” conjugating “pure saliences” so as to parse economies, microhistories, insurgencies, and epistemological evolutionary processes that can be conceived of independently from their representational form. Unlike Gestalt theory’s oppositional constructions, the advantage of this aperture is that it posits a dynamic context to both media and its analysis, rendering them functionally tractable and set in relation to other (...) objects, rather than as sedentary identities. Surveying the genealogy of differential heterogenesis with particular interest in the legacy of Lautman’s dialectic, I make the case for a reading of the Deleuzean virtual that departs from an event-oriented approach, galvanizing Sarti and Citti’s dynamic a priori vis-à-vis Deleuze’s philosophy of difference. Specifically, I posit differential heterogenesis as frame with which to examine our contemporaneous epistemic shift as it relates to multi-scalar computational modeling while paying particular attention to neuro-inferential modes of inductive learning and homologous cognitive architecture. Carving a bricolage between Mark Wilson’s work on the “greediness of scales” and Deleuze’s “scales of reality”, this project threads between static ecologies and active externalism vis-à-vis endocentric frames of reference and syntactical scaffolding. (shrink)

Kenneth Taylor's book, Referring to the World: An Opinionated Introduction to the Theory of Reference, is an exploration of the cognitive resources required to refer to things in the external world. According to Taylor, there is a lot going on. One needs the appropriate internal syntactic objects (which are, on Taylor's view, the product of discursive activity), plus the appropriate internal conceptions, plus of course, the things in the external world that are causally related to our sense organs. His (...) project then is to direct this symphony of moving parts. (shrink)

What is the relationship between conceptual engineering and metasemantic externalism? Sally Haslanger has argued that metasemantic externalism justifies the seemingly counterintuitive consequences of her proposed conceptual revisions. But according to Herman Cappelen, metasemantic externalism makes conceptual engineering effectively impossible in practice. After raising objections to Haslanger’s and Cappelen’s views, I argue for a very different picture, on which metasemantic externalism bears very little on conceptual engineering. I argue that, while metasemantic externalism principally operates at the (...) level of semantic-meaning, we should understand conceptual engineering to operate largely at the level of speaker-meaning. This ‘Speaker-Meaning Picture’ has two key benefits. Firstly, it makes conceptual engineering often easy in practice. Secondly, it suggests a new, normative response to the well known objection that conceptual engineering serves only to change the subject. (shrink)

The format of this book is unusual, especially for a book about linguistics. The book is meant primarily as a research monograph aimed at linguists who have some background in formal semantics, e. g. Montague Grammar. However, I have two other audiences in mind. Linguists who have little or no experience of formal semantics, but who have worked through a basic mathematics for linguists course (e. g. using Wall, 1972, or Partee, 1978), should, perhaps with the help of a sympathetic (...) Montague gramma rian, be able to discover enough of how I have adapted some of the basic ideas in formal semantics to make the developments that I undertake in the rest of the book accessible. Logicians and computer scientists who know about model theoretic semantics and formal systems should be able to glean enough from Chapters I and II about linguistic concerns and techniques to be able to read the remainder of the book, again possibly with the help of a sympathetic Montague grammarian. However, readers should beware. Chapter II is not meant as a general introduction either to formal semantics or to linguistics and while much of the presentation there is going over ground that is already well covered in the literature, the particular formulation and the emphases are very much oriented to the developments to be undertaken later in the book. (shrink)

Halvorson argues that the semantic view of theories leads to absurdities. Glymour shows how to inoculate the semantic view against Halvorson's criticisms, namely by making it into a syntactic view of theories. I argue that this modified semantic-syntactic view cannot do the philosophical work that the original "language-free" semantic view was supposed to do.

Since Twin Earth was discovered by American philosophical-space explorers in the 1970s, the domain of.

Internalism says that if an agent judges that it is right for her to φ, then she is motivated to φ. The disagreement between Internalists and Externalists runs deep, and it lingers even in the face of clever intuition pumps. An argument in Michael Smith’s The Moral Problem seeks some leverage against Externalism from a point within normative theory. Smith argues by dilemma: Externalists either fail to explain why motivation tracks moral judgment in a good moral agent or they (...) attribute a kind of fetishism to good moral agents. I argue that there are alternative models of moral motivation available to Externalists, in particular a model according to which a good moral agent is one who is effectively regulated by a second order desire to desire to do what is right. (shrink)

A significant and interesting part of the post-Gettier literature regarding the analysis of propositional knowledge is the attempt to supplement the traditional tripartite analysis by employing a fourth condition regarding the defeasibility of evidence and thus to preclude the counterexamples displayed in Gettier’s original article. My aim in this paper is to critically examine the sort of externalism that accompanies the most promising of the proposed fourth conditions, due to Pollock, in order to offer some fresh insights on this (...) old epistemological issue. I argue that Pollock’s paradigmatic treatment of the matter gives rise to a critical problem with regard to the exact role of the fourth condition and its relation with the onto-semantic or alethic condition of propositional knowledge, to wit, truth. In the light of this discussion, I draw certain conclusions about epistemic externalism and point out some of its theoretical shortcomings. (shrink)

Abstract: This paper introduces and analyses the doctrine of externalism about semantic content; discusses the Twin Earth argument for externalism and the assumptions behind it, and examines the question of whether externalism about content is compatible with a privileged knowledge of meanings and mental contents.

1. The primary evidence and motivation for externalism in the philosophy of mind is provided by the semantic facts that support direct reference theories of names, indexi- cal pronouns, and natural kind terms. But many externalists have forgotten their sem- antic roots, or so I shall contend here. I have become convinced of this by a common reaction among externalists to the main argument of my 1991 paper AAnti-Individual- ism and Privileged Access.@ In that argument, I concluded that (...) class='Hi'>externalism is incompat- ible with the principle that we can have privileged, non-empirical knowledge of the contents of our own thoughts. The reaction in question amounts to a dismissive denial of one of my argument=s main premises. This premise, which I defended at length in the paper, is that an externalist thesis regarding a cognitive property should hold that possession of the property by a person _logically_, or _conceptually_, implies the existence of objects external to that person. (shrink)

ABSTRACT Temporal externalism is the view that the meanings and extensions of linguistic expressions can be partly determined by contingent linguistic and/or conceptual developments that take place after the time of utterance. In this paper, I first clarify what it would take for temporal externalism to be true, relying on the notion of burden-shifting dispositions. I then go on to argue that existing thought experiments give us reason to expect that temporal externalism can be true of some (...) natural kind terms, and present a new thought experiment suggesting it can also be true of some proper names. (shrink)

Traditionally, the debate between epistemological internalists and externalists has centered on the value of knowledge and its justification. A value pluralist, virtue-theoretic approach to epistemology allows us to accept what I shall call the insight of externalism while still acknowledging the importance of internalists’ insistence on the value of reflection. Intellectual virtue can function as the unifying consideration in a study of a host of epistemic values, including understanding, wisdom, and what I call articulate reflection. Each of these epistemic (...) values is a good internal to inquiry. Thus, an inquiry-based conception of virtue is particularly well suited to help us account for a wide variety of epistemic goods, without reducing the value of those many goods to their contribution to the value of knowledge. Moreover, an inquiry-based conception of virtue can function as the unifying consideration in a general study of value, the scope of which is not restricted to epistemic value. (shrink)

In this paper we present a sequent calculus for the modal propositional logic GL (the logic of provability) obtained by means of the tree-hypersequent method, a method in which the metalinguistic strength of hypersequents is improved, so that we can simulate trees shapes. We prove that this sequent calculus is sound and complete with respect to the Hilbert-style system GL, that it is contraction free and cut free and that its logical and modal rules are invertible. No explicit semantic element (...) is used in the sequent calculus and all the results are proved in a purely syntactic way. (shrink)

Cognitive Science, Volume 46, Issue 7, July 2022.

A certain interpretation of Wittgenstein’s remarks in On Certaintyadvanced by such figures as Hilary Putnam, Peter Strawson, Avrum Stroll and Crispin Wrighthas become common currency in the recent literature. In particular, this reading focuses upon the supposed anti-sceptical import of the Wittgensteinian notion of a “hinge” proposition. In this paper it is argued that this interpretation is flawed both on the grounds that there is insufficient textual support for this reading and that, in any case, it leads to unpalatable philosophical (...) problems. Moreover, it is claimed that the popularity of this construal of On Certainty in the contemporary debate reflects an implicit commitment to the contentious doctrine of epistemological internalism. Nevertheless, it is argued that, suitably modified along the epistemologically externalist lines suggested by Michael Williams, one might be able to resurrect a viable anti-sceptical hinge proposition thesis. Furthermore, it is claimed that such a conception of the notion also receives some, albeit inconclusive, textual support from On Certainty. (shrink)

Journal of Mathematical Logic, Volume 23, Issue 02, August 2023. In mathematical logic there are two seemingly distinct kinds of principles called “reflection principles.” Semantic reflection principles assert that if a formula holds in the whole universe, then it holds in a set-sized model. Syntactic reflection principles assert that every provable sentence from some complexity class is true. In this paper, we study connections between these two kinds of reflection principles in the setting of second-order arithmetic. We prove that, (...) for a large swathe of theories, [math]-model reflection is equivalent to the claim that arbitrary iterations of uniform [math] reflection along countable well-orderings are [math]-sound. This result yields uniform ordinal analyzes of theories with strength between [math] and [math]. The main technical novelty of our analysis is the introduction of the notion of the proof-theoretic dilator of a theory [math], which is the operator on countable ordinals that maps the order-type of [math] to the proof-theoretic ordinal of [math]. We obtain precise results about the growth of proof-theoretic dilators as a function of provable [math]-model reflection. This approach enables us to simultaneously obtain not only [math], [math] and [math] ordinals but also reverse-mathematical theorems for well-ordering principles. (shrink)

Marques (Philosophia, 49(3), 1109–1125 2021) argues that Hom’s Combinatorial Externalism (CE) faces a hitherto unknown problem when coupled with a standard Kratzerian account of deontic modality: CE plus Kratzerian modality would entail the negation of a thesis central to Hom’s analysis of slurs, the null extensionality thesis (i.e., the thesis that slurs have empty extensions). Since modality is an integral part of Hom’s take on slurs, and Kratzer’s account of modality has the status of the standard take on modality, (...) this would be bad news for CE. In this paper, I argue that, pace Marques, CE and a Kratzerian account of deontic modals do not clash with the null extensionality claim. Marques’ discussion, however, helps us expose substantive, non-semantic assumptions concerning practical philosophy that seem to be implicitly built into CE’s semantic analysis of slurs. (shrink)

Journal Name: Cognitive Linguistics Issue: Ahead of print.

This study addressed the question of whether L2 learners are able to utilize verb’s argument structure information in online structural analysis. Previous L2 research has shown that L2 learners have difficulty in using verb’s intransitive information to guide online syntactic processing. This is true even though L2 learners have grammatical knowledge that is correct and similar to that of native speakers. In the present study, we contrasted three hypotheses, the initial inaccessibility account, the intransitivity overriding account, and the fuzzy (...) subcategorization frame account, to investigate whether L2 learner’s knowledge of intransitive verbs is in fact ignored in L2 online structural analysis. The initial inaccessibility account and the fuzzy subcategorization frame account predicted that L2 learners cannot access intransitivity information in building syntactic structures in any situation. The intransitivity overriding account predicted that intransitivity information is accessed in L2 parsing, but this process is overridden by the strong transitivity preference when a verb is followed by a noun phrase. Importantly, the intransitivity overriding account specifically predicted that L2 learners would be able to use intransitive information in online syntactic processing when a noun phrase does not appear immediately following a verb. We tested the three accounts in an eye-tracking reading experiment using filler-gap dependency structures. We manipulated verb’s transitivity information and lexically based plausibility information and tested English native speakers as a control L1 group and Japanese-English L2 participants. The results showed that L2 learners as well as native speakers processed sentences differently depending on the subcategorization information of the verb, and adopted transitive analysis only when the verb was optionally transitive, providing support for the intransitivity overriding. The results further demonstrated that L2 learners had strong expectations for the transitive structure, which is consistent with the view proposed by the hyper-active gap-filling hypothesis. In addition, the results showed that the semantic mismatch in the incorrect transitive analysis facilitated native speaker’s processing but caused difficulty for L2 learners. Together, the current study provides evidence that L2 learners use intransitive information of the verbs to guide their structural analysis when there are no overriding constraints. (shrink)

The interpretation of `much/many' has been argued to be regulated by Uniform Dimensionality (Hackl 2000; Solt 2009): `much' is underspecified but `many' encodes cardinality. However, given some data where `many' denotes ‘volume’, Snyder (2021) proposes the need for Multiform Dimensionality: both `much' and `many' are underspecifed. After reviewing the English data, and in light of novel cross-linguistic data, we argue that neither generalization is fully accurate. Instead, following Wellwood (2015, 2018), we argue for an alternative, Abstract Uniform Dimensionality, which we (...) propose to be universal: MUCH always measures cardinality when it scopes over semantically interpretable plural. We derive the universal by proposing that MUCH can occupy different positions in the NP, only one of which has semantic plural in its scope. Variation is thus not semantic, but morpho-syntactic. (shrink)

European Journal of Philosophy, Volume 30, Issue 1, Page 182-204, March 2022.

Any progress in shaping up an externalist psychiatry, so previous discussion suggested, must begin from questions about the ontology of social causation. So far, research and theory have adhered to a naturalistic approach to the social causes of illness, concentrating mostly on the ‘social determinants of mental health’ (inequality, discrimination, housing insecurity, etc.). The paper starts with an assessment of ‘social determinants’ through the lens of epidemiology and critical psychiatry. It illustrates existing practical and political approaches that fight these constraints (...) and it highlights their therapeutic value. It argues, though, that a focus on social determinants is not sufficient for fully realizing externalism because a great portion of sociogenic illness remains causally indeterminate. Alongside political action, externalism requires a social etiology that is established by virtue of the meaning that it holds for patients, rather than by virtue of its capacity to identify objective social causes of illness. This entails abandoning naturalism about social causation and embracing constructivism. The paper shows that this methodological shift is less contradictory and more effective than it is commonly imagined. Drawing from further anthropological evidence, it concludes that only by lending support to projects that balance a focus on constraints with social construction will psychiatry be truly externalist. At stake is a prospect of effective treatment for sociogenic illness for the countless in struggle. (shrink)