I published the first version of this essay in February, arguing that the Frege–Geach problem, that three-score-year-old albatross around expressivism’s neck rests on a category error. Analytic philosophers were polite about it in the way that analytic philosophers are polite about things they intend to ignore. I don’t often revise my manuscripts, opting instead to publish a new and improved version, but the meat of this one remained strong and not worth revisiting as much as fortifying.
The trouble was that I’d dissolved the problem without resolving it. Good enough for me. Others were less convinced. Telling people they’ve been asking the wrong question is satisfying but insufficient without a better one. Version 1.1 tidied the prose. Version 1.2 does the actual work.
The new section (§4, if you’ve already read previous versions) introduces recruitable expressions – a broader class of expressions (moral predicates, thick evaluative terms, epistemic and institutional vocabulary) whose full functional load is attenuated under embedding whilst a thinner inferential profile remains available for reasoning. The standard of practical inferential adequacy replaces the demand for semantic identity: what ordinary reasoning requires is not invariance but inferential sufficiency. And the pattern isn’t peculiar to moral language – a noted goal –, which means Frege–Geach stops looking like a special embarrassment for expressivism and starts looking like one symptom of a general feature of how natural language handles multi-functional expressions under logical stress.
The essay is dissolved as a demand for unrestricted semantic invariance. It is resolved insofar as the behaviour it identifies is explained, predicted, and shown to be general.
The revised paper is available here, near the rest of my manuscripts:
The first step is to stop pretending that ‘truth’ names a single thing.
Philosopher Bernard Williams helpfully distinguished between thin and thick senses of truth in Truth and Truthfulness. The distinction is simple but instructive.
In its thin sense, truth is almost trivial. Saying ‘it is true that p’ typically adds nothing beyond asserting p. The word ‘true’ functions as a logical convenience: it allows endorsement, disquotation, and generalisation. Philosophically speaking, this version of truth carries very little metaphysical weight. Most arguments about truth, however, are not about this thin sense.
In practice, truth usually appears in a thicker social sense. Here, truth is embedded in practices of inquiry and communication. Communities develop norms around sincerity, accuracy, testimony, and credibility. These norms help stabilise claims so that people can coordinate action and share information.
At this level, truth becomes something like a social achievement. A statement counts as ‘true’ when it can be defended, circulated, reinforced, and relied upon within a shared framework of interpretation. Evidence matters, but so do rhetoric, persuasion, institutional authority, and the distribution of power. This is the sense in which truth is rhetorical, but rhetoric is not sovereign.
NotebookLM Infographic on this topic. I prompted NotebookLM to illustrate a 4-layered model that shows how removed language is from encounter, attention, conception, and representation of what we normally consider to be reality. This view is supported by both MEOW and LIH.
Human beings can imagine almost anything about the world, yet the world has a stubborn habit of refusing certain descriptions. Gravity does not yield to persuasion. A bridge designed according to fashionable rhetoric rather than sound engineering will collapse regardless of how compelling its advocates may have been.
This constraint does not disappear in socially constructed domains. Institutions, identities, norms, and laws are historically contingent and rhetorically stabilised, but they remain embedded within material, biological, and ecological conditions. A social fiction can persist for decades or centuries, but eventually it encounters pressures that force revision.
Subjectivity, therefore, doesn’t imply that ‘anything goes’. It simply means that all human knowledge is mediated.
We encounter the world through perception, language, culture, and conceptual frameworks. Every description is produced from a particular standpoint, using particular tools, within particular historical circumstances. Language compresses experience and inevitably loses information along the way. No statement captures reality without distortion. This is the basic insight behind the Language Insufficiency Hypothesis.
At the same time, our descriptions remain answerable to the constraints of the world we inhabit. Some descriptions survive repeated encounters better than others.
In domains where empirical constraint is strong – engineering, physics, medicine – bad descriptions fail quickly. In domains where constraint is indirect – ethics, politics, identity, aesthetics – multiple interpretations may remain viable for long periods. In such cases, rhetoric, institutional authority, and power often function as tie-breakers, stabilising one interpretation over others so that societies can coordinate their activities. These settlements are rarely permanent.
What appears to be truth in one era may dissolve in another. Concepts drift. Institutions evolve. Technologies reshape the landscape of possibility. Claims that once seemed self-evident may later appear parochial or incoherent.
In this sense, many truths in human affairs are best understood as temporally successful settlements under constraint.
Even the most stable arrangements remain vulnerable to change because the conditions that sustain them are constantly shifting. Agents change. Environments change. Expectations change. The very success of a social order often generates the tensions that undermine it. Change, in other words, is the only persistence.
The mistake of traditional realism is to imagine truth as a mirror of reality – an unmediated correspondence between statement and world. The mistake of crude relativism is to imagine that language and power can shape reality without limit. Both positions misunderstand the situation.
We do not possess a final language that captures reality exactly as it is. But neither are we free to describe the world however we please. Truth is not revelation, and it is not mere invention.
It is the provisional stabilisation of claims within mediated encounter, negotiated through language, rhetoric, and institutions, and continually tested against a world that never fully yields to our descriptions. We don’t discover Truth with a capital T. We negotiate survivable descriptions under pressure.
I’ve long had a problem with Truth – or at least the notion of it. It gets way too much credit for doing not much at all. For a long time now, philosophers have agreed on something uncomfortable: Truth isn’t what we once thought it was.
Truth isn’t what we once thought it was
The grand metaphysical picture, where propositions are true because they correspond to mind-independent facts, has steadily eroded. Deflationary accounts have done their work well. Truth no longer looks like a deep property hovering behind language. It looks more like a linguistic device: a way of endorsing claims, generalising across assertions, and managing disagreement. So far, so familiar.
Audio: NotebookLM summary podcast of this topic.
What’s less often asked is what happens after we take deflation seriously. Not halfway. Not politely. All the way.
That question motivates my new paper, Truth After Deflation: Why Truth Resists Stabilisation. The short version is this: once deflationary commitments are fully honoured, the concept of Truth becomes structurally unstable. Not because philosophers are confused, but because the job we keep asking Truth to do can no longer be done with the resources we allow it.
The core diagnosis: exhaustion
The paper introduces a deliberately unromantic idea: truth exhaustion. Exhaustion doesn’t mean that truth-talk disappears. We still say things are true. We still argue, correct one another, and care about getting things right. Exhaustion means something more specific:
After deflation, there is no metaphysical, explanatory, or adjudicative remainder left for Truth to perform.
Truth remains grammatically indispensable, but philosophically overworked.
Image: NotebookLM infographics of this topic. (Please ignore the typos.)
The dilemma
Once deflationary constraints are accepted, attempts to “save” Truth fall into a simple two-horn dilemma.
Horn A: Stabilise truth by making it invariant. You can do this by disquotation, stipulation, procedural norms, or shared observation. The result is stable, but thin. Truth becomes administrative: a device for endorsement, coordination, and semantic ascent. It no longer adjudicates between rival frameworks.
Horn B: Preserve truth as substantive. You can ask Truth to ground inquiry, settle disputes, explain success, or stand above practices. But now you need criteria. And once criteria enter, so do circularity, regress, or smuggled metaphysics. Truth becomes contestable precisely where it was meant to adjudicate.
Stability costs substance. Substance costs stability. There is no third option waiting in the wings.
Why this isn’t just abstract philosophy
To test whether this is merely a theoretical artefact, the paper works through three domains where truth is routinely asked to do serious work:
Moral truth, where Truth is meant to override local norms and condemn entrenched practices.
Scientific truth, where Truth is meant to explain success, convergence, and theory choice.
Historical truth, where Truth is meant to stabilise narratives against revisionism and denial.
In each case, the same pattern appears. When truth is stabilised, it collapses into procedure, evidence, or institutional norms. When it is thickened to adjudicate across frameworks, it becomes structurally contestable. This isn’t relativism. It’s a mismatch between function and resources.
Why this isn’t quietism either
A predictable reaction is: isn’t this just quietism in better prose?
Not quite. Quietism tells us to stop asking. Exhaustion explains why the questions keep being asked and why they keep failing. It’s diagnostic, not therapeutic. The persistence of truth-theoretic debate isn’t evidence of hidden depth. It’s evidence of a concept being pushed beyond what it can bear after deflation.
The upshot
Truth still matters. But not in the way philosophy keeps demanding. Truth works because practices work. It doesn’t ground them. It doesn’t hover above them. It doesn’t adjudicate between them without borrowing authority from elsewhere. Once that’s accepted, a great deal of philosophical anxiety dissolves, and a great deal of philosophical labour can be redirected.
The question is no longer “What is Truth?” It’s “Why did we expect Truth to do that?”
The paper is now archived on Zenodo and will propagate to PhilPapers shortly. It’s long, unapologetically structural, and aimed squarely at readers who already think deflationary truth is right but haven’t followed it to its endpoint.
Read it if you enjoy watching concepts run out of road.
I published A Language Insufficiency Hypothesis this month, and this is one of a series of videos summarising the content. In this segment, I’m discussing Chapter 1: A Genealogy of Insufficiency
In this video, I touch on Plato to Barthes and Foucault. Derrida gets no love, and I mention bounded rationality, but not Simon. I discuss Steven Pinker’s dissent in more detail in a later chapter.
Below, I’ve included some artefacts from the book.
Image: Chapter 1: Page 1
And always remember that it is impossible to speak in such a way that you cannot be misunderstood: there will always be some who misunderstand you. — Karl Popper, Unended Quest: An Intellectual Autobiography
Image: Genealogy of Insufficiency: A Historical TrajectoryImage: Table of Contents
I’ve just published an essay following on the work of cognitive neuroscientist Evelina Fedorenko (cover image). It arrives on the heels of A Language Insufficiency Hypothesis (LIH). A companion essay is in the works.
Language as Interface strengthens the position of LIH, explaining why moral issues fail before language is even engaged. Her work also leads me to believe that we should revisit 20th-century accounts of the history of language.
Audio: NotebookLM summary podcast of the underlying essay.
The essay I am working on now explains why this extends to emotional language more generally.
Meanwhile, read the essay or listen to the podcast summary.
A Language Insufficiency Hypothesis is now available, and I am commencing a series of video content to support it.
Video: Language Insufficiency Hypothesis – Part 1 – The Basic Concepts (Duration: 6:44)
In this primer, I introduce the Language Effectiveness–Complexity Gradient and the nomenclature of the hypothesis: Invariants, Contestables, Fluids, and Ineffables.
In the next segment, I’ll discuss the Effectiveness and Presumed Effectiveness Horizons.
If you would like to support my work, consider purchasing one of my books. Leaving ratings and reviews helps more than you know to appease the algorithm gods.
Almost a decade in the making, this book explains why more time, more effort, and more detail do not reliably improve certain forms of communication. Beyond a point, returns diminish sharply. In some domains, they collapse altogether.
The manuscript focuses on English, but the hypothesis has already been extended to French (published separately), and I am continuing work on other ontological barriers. If you’re interested in testing or extending the framework in your own language, feel free to get in touch.
Over the coming weeks, I’ll be unpacking aspects of the Language Insufficiency Hypothesis in more depth here. The book’s role is deliberately limited: it defines the problem, establishes the structure, and offers grounding examples. The real work happens in the consequences.
For now, the important thing is simple: the book is finally available.
