Questions: Phenomenal Concepts and the Concept Gap

Question 1

The phenomenal concept strategy argues that the apparent gap between physical and phenomenal descriptions of consciousness is explained by:

• A. A genuine metaphysical gap: consciousness is non-physical and cannot be fully described in physical terms
• B. A scientific limitation: we simply haven't yet identified the neural correlates of consciousness
• C. Different modes of conceptual reference: physical and phenomenal concepts pick out the same fact via different kinds of presentation, not different facts
• D. The inherent inadequacy of language for expressing subjective experience

Answer: (C)

The phenomenal concept strategy is a physicalist defense. It argues that the apparent gap is a conceptual artifact, not a metaphysical reality. Physical concepts refer via causal-functional description; phenomenal concepts refer via direct acquaintance with the quality itself. Two very different concepts can refer to the same thing — as 'morning star' and 'evening star' both refer to Venus. The gap in our descriptions doesn't imply a gap in the underlying facts. Critics grant this is possible but argue it doesn't explain *why* we have acquaintance-based concepts, or why those concepts feel non-physical.

Question 2

The 'morning star / evening star' analogy is introduced in this context to illustrate that:

• A. We can never determine whether two descriptions refer to the same thing without empirical investigation
• B. Two very different concepts can refer to the same object, and the difference between concepts doesn't reveal a difference in what they refer to
• C. Phenomenal concepts, like astronomical concepts, are always eventually reducible to physical descriptions
• D. The explanatory gap proves there are two distinct substances, just as there were historically thought to be two distinct stars

Answer: (B)

'Morning star' and 'evening star' are cognitively very different concepts — for centuries, observers thought they named different celestial objects. Yet both refer to Venus. The identity was an empirical discovery, not deducible from analyzing the concepts. Similarly, 'C-fibers firing' and 'this sharp pain' might refer to the same physical state — but because one concept is descriptive (causal-functional) and the other is acquaintance-based (direct presentation), their co-reference feels unobvious and requires empirical investigation. The concept difference does not imply a fact difference.

Question 3

The phenomenal concept strategy is a defense of physicalism, arguing that the concept gap does not entail a metaphysical gap between physical and phenomenal reality.

• T. True
• F. False

Answer: True

The phenomenal concept strategy is explicitly a physicalist move. It accepts the observation that we have two very different kinds of concepts for consciousness — physical-functional and phenomenal-acquaintance — but denies that this conceptual difference implies a metaphysical difference. The strategy says: the reason there seems to be a hard problem is that phenomenal concepts are so unlike physical concepts, not that consciousness is non-physical. It's a diagnosis of why we find physicalism counterintuitive, not an abandonment of it.

Question 4

According to the phenomenal concept strategy, the identity 'C-fibers firing = this sharp pain' is knowable by analyzing the two concepts alone, without empirical investigation.

• T. True
• F. False

Answer: False

The whole point of invoking the morning star / evening star analogy is that co-reference between different concept types is an empirical discovery, not an a priori truth. If phenomenal concepts refer via direct acquaintance and physical concepts refer via causal description, then their co-reference cannot be read off by conceptual analysis — it would have to be discovered, much like learning Venus is both the morning star and the evening star. This is why the concept gap doesn't close by philosophical argument alone.

Question 5

What does it mean to say phenomenal concepts refer via 'direct acquaintance' rather than 'description,' and why does this matter for understanding the explanatory gap?

Model answer: A descriptive concept identifies something via its causal or functional role — 'the state that causes pain behavior' or 'the receptor that responds to heat.' A phenomenal concept seems to present the quality itself directly: when thinking about pain, you use the felt quality as the vehicle of thought, not a description of it. This matters because concepts that refer so differently will feel like they refer to different things even if they refer to the same state. The explanatory gap — the sense that physical descriptions leave something out — is explained as an artifact of this conceptual difference, not as evidence of a real metaphysical residue.

The phenomenal concept strategy locates the source of the hard problem in our cognitive situation, not in the structure of reality. We are creatures with two radically different ways of accessing the same states — from the outside via causal description, and from the inside via acquaintance. That dual access generates the illusion of two substances where there is only one. Critics argue this merely redescribes the mystery: why do we have acquaintance-based access at all, if we are purely physical?