Mind, Matter, and Meaning

Transparency

Transparency concerns the apparent world-directedness of introspection on perceptual experience. When someone attends to seeing a red apple, attention ordinarily falls on the apparent apple, its color, and its shape, rather than a second private surface carrying those qualities. The experience can seem transparent to what it presents.

Philosophers disagree about the strength and scope of this observation. A modest thesis says introspection depends on attending to represented objects and properties. Stronger versions deny direct awareness of intrinsic properties of experience. Neither formulation automatically proves that phenomenal character is identical with representational content.

Historical Motivation

G. E. Moore’s discussion of the apparently diaphanous character of sensation supplies an early point of reference. Gilbert Harman’s “The Intrinsic Quality of Experience” makes the observation central to a challenge against treating experienced colors as intrinsic qualities of mental states. Michael Tye develops it into an argument for representationalism.

This history does not make transparency exclusively representationalist. As Tye notes, a sense-datum theorist can distinguish the act of sensing from the thing sensed and assign the noticed qualities to the latter. Moore’s diaphanous sensation therefore should not be read as already endorsing an external-object theory of perceptual content.

Consider blue seen on an ocean’s surface. The blue appears to belong to the surface, not to the neural process enabling sight. An experience representing blue need not itself be blue, just as a representation of a large object need not have that object’s size. This vehicle/content distinction explains why the location and physical properties of the experience’s vehicle cannot simply be read from what appears.

Tye’s Argument from Transparency

In “Representationalism and the Transparency of Experience,” Tye develops ten steps. The first seven concern vision; the last three extend the approach. Their central moves can be summarized as follows:

  1. Visual qualities appear as qualities of presented surfaces, rather than introspectively accessible qualities of the experience.
  2. Treating them instead as mislocated private qualities threatens to attribute extensive error to ordinary visual presentation.
  3. Introspective attention to the experience concerns those presented qualities, not an independently encountered inner display.
  4. Hallucination can have a similar character without an actual external object bearing the apparent qualities.
  5. Changes in the qualities of which the subject is directly aware necessarily change visual phenomenal character.
  6. Representational content of an appropriate kind offers, on Tye’s account, the best explanation of these facts.
  7. This rejects qualia defined as directly accessible intrinsic qualities of experiences, while preserving qualities contributing to what experience is like.
  8. The account extends to hearing, smell, and taste: the directly presented qualities appear to belong to sounds, odors, and tastes, not to the experiences.
  9. Bodily sensations receive a parallel treatment. A pain presents a disagreeable condition as located in a bodily region; a phantom pain shows that the apparent region need not exist.
  10. Felt emotions and moods can present bodily changes or a change in oneself and the surrounding world. Tye argues that these appearances likewise do not reveal qualities of the experience’s vehicle.

Step six is explanatory, not a deductively established identity. Dependence on presented qualities alone does not show that no additional property contributes to phenomenal character. Step four also assumes an appropriate common phenomenal type across perception and hallucination, which disjunctivists contest.

Blurry Vision

An object can be seen blurrily without being seen as blurry. Unfocusing one’s eyes on a sharp-edged printed letter changes the experience without making the letter appear to possess intrinsically fuzzy edges. Paul Boghossian and David Velleman, and Ned Block in related discussions, use this contrast to challenge an exclusively content-based account.

Tye replies that blurry vision can involve less determinate representation of boundaries, whereas seeing an object as blurry represents its edges as objectively indistinct. He distinguishes seeing something blurrily, seeing it as blurry, and seeing a blurry object clearly. In his usage, the second involves a conceptual classification; the first and third need not. The proposed content differences would explain phenomenal differences without an extra inner quality.

A watercolor example makes the contrast concrete. A painting made on wet paper can have genuinely blurred edges seen clearly through glasses. A painting with sharp edges, viewed without glasses, can instead be seen blurrily. Tye reports Frank Jackson’s suggestion that the first experience precisely represents an indefinite boundary, whereas the second fails to specify an otherwise definite boundary. The theory distinguishes representing indeterminacy in the object from representing the object indeterminately.

Critics ask whether indeterminacy captures the character of blur or merely its informational consequences. More general intentionalist approaches distinguish representational content from the manner or mode of presentation. The question is whether that additional structure remains compatible with the intended transparency thesis.

Inversion and Hallucination

Inverted-spectrum cases imagine matching representations with different phenomenal character. If possible, such cases would threaten strong representationalism. They need not refute the modest observation that attention returns to the presented scene. Representationalists challenge the possibility or the description of the matching content; critics argue that transparency alone leaves the inversion open.

Naive realist and disjunctivist theories can also accept aspects of transparency. A veridical experience may relate a subject directly to an external object rather than represent a common experiential kind also available in hallucination. Consequently, transparency does not independently choose between representationalism and every form of direct realism.

Reflective Access and Other Modalities

Tye’s 2002 account distinguishes direct awareness of presented qualities from awareness that one is undergoing an experience with a certain character. Introspection is not a scan of the neural vehicle. He models it as a reliable process leading from awareness of the presented qualities to a judgment about one’s experience, without conscious inference. Critics can accept the world-directed starting point while disputing the reliability, exhaustiveness, or metaphysical conclusions of that account.

Tim Crane questions whether introspection can settle the correct theory of phenomenal character. Knowing what an experience is like differs from knowing its complete metaphysical nature. Attention can reveal contrasts in clarity, organization, or manner of presentation even when it does not reveal a private colored surface.

Pain, emotion, mood, and imagery further complicate generalization. Pain can present a bodily disturbance rather than an ordinary visible object. A mood may have diffuse world-directed character without selecting one clear target. Whether these experiences are transparent in the same sense as vision remains disputed.

The evidential value of transparency therefore depends on the thesis defended. It can motivate resistance to an inner-display model while leaving questions about consciousness, subjectivity, phenomenal properties, and explanatory identity unanswered. A strong theory must defend those further claims through arguments beyond the original introspective observation.

Further Reading

  • Harman, Gilbert. 1990. “The Intrinsic Quality of Experience.” Philosophical Perspectives 4: 31–52.
  • Crane, Tim. 2000. “Introspection, Intentionality, and the Transparency of Experience.” Philosophical Topics 28: 49–67.
  • Tye, Michael. 2002. “Representationalism and the Transparency of Experience.” Noûs 36: 137–151.