The phenomenal concept strategy (PCS) is the physicalist’s most developed reply to the hard problem of consciousness and the anti-physicalist arguments that feed it. Its claim: we possess special phenomenal concepts, ways of thinking about experiences acquired through having them, that stand conceptually isolated from our physical and functional concepts. Two concepts can pick out one and the same property while remaining cognitively independent, so the felt unbridgeable distance between “C-fibers firing” and “this — pain” is exactly what we should expect even if they refer to the same thing. On the strategy, the explanatory gap is a fact about our concepts, not about the properties they pick out: real, predicted, and harmless to physicalism.
The Strategy
The strategy is associated with Brian Loar, David Papineau, Katalin Balog, and others, but it names a family rather than one mechanism. Accounts construe phenomenal concepts as recognitional, demonstrative or indexical, quotational or constitutional, and directly referential. Some ground their deployment in undergoing the relevant experience; others specify a different cognitive architecture. The shared physicalist proposal says that phenomenal and physical concepts can remain cognitively isolated while co-referring. No amount of physical description thereby confers the first-person route, and zombies may remain conceivable without being possible. See Mary's Room and Zombies and Conceivability.
How It Answers the Gap
The PCS lets the physicalist concede the epistemic gap and deny the ontological one. Mary learns no new fact; she gains a new, phenomenal concept of a fact she already knew physically — a reading that pairs naturally with Lewis’s ability hypothesis and Tye’s representational account. The zombie’s conceivability shows a gap between two concepts, not two properties. This is the machinery behind the claim that the hard problem is epistemic, not ontological. See The Hard Problem of Consciousness and The Explanatory Gap.
Chalmers’s Objection
The strategy has a formidable critic. David Chalmers (“Phenomenal Concepts and the Explanatory Gap,” 2006) requires a topic-neutral psychological feature C to explain a topic-neutral epistemic situation E. If C can vary with the physical facts fixed, the gap has moved into C; if it cannot, Zombie Mary has C too, while her corresponding belief may lack Mary’s truth or justification. C then explains shared recognition and gap-talk without explaining their whole epistemic difference. The debate remains live.
My View
The PCS supplies the dialectical setting for the book’s epistemic-not-ontological framing, but the house account adopts no generic strategy wholesale. It pairs the independent identity claim with a narrower acquisition story: acquaintance with an occurring world-presenting state grounds recognitional capacities that description alone does not confer. See Identity Theory.
To Chalmers’s dilemma the house account takes the second horn. A physical duplicate shares the architecture that anchors a demonstrative and later recognition; that architecture explains conceptual isolation and gap-talk, not by itself the truth of Mary’s thought. Chapter 6’s independent identity claim fixes what the concept reaches and carries the metaphysical burden. Philip Goff adds a further question: what does acquaintance reveal? The answer grants limited translucency. Acquaintance reveals part of the state’s manifest world- or body-presenting profile while leaving its content-fixing history and neural realization undisclosed. It reveals more than bare reference and less than complete essence.
Related Concepts
- The Hard Problem of Consciousness — the PCS is the leading physicalist deflation of it
- The Explanatory Gap — recast as a gap between concepts, not properties
- Mary's Room — Mary acquires acquaintance-grounded recognitional access to an old physical fact
- Zombies and Conceivability — conceivability as conceptual isolation, not metaphysical possibility
- Identity Theory — the same property under two concepts