more from this thinker     |     more from this text


Single Idea 2422

[filed under theme 12. Knowledge Sources / B. Perception / 4. Sense Data / a. Sense-data theory ]

Full Idea

In vision three varieties of cones abstract out information according to the amount of light present in various overlapping wavelength ranges. Immediately, many distinctions present in the original light wave are lost.

Gist of Idea

The structure of the retina has already simplified the colour information which hits it

Source

David J.Chalmers (The Conscious Mind [1996], 3.8.3)

Book Ref

Chalmers,David J.: 'The Conscious Mind' [OUP 1997], p.289


The 23 ideas with the same theme [theory that sense-data actually exist]:

The qualities of the world are mere appearances; reality is the motions which cause them [Hobbes]
Appearance and reality can be separated by mirrors and echoes [Hobbes]
Direct feeling of the senses are merely data; perception of the world comes with understanding causes [Schopenhauer]
In 1921 Russell abandoned sense-data, and the gap between sensation and object [Russell, by Grayling]
Seeing is not in itself knowledge, but is separate from what is seen, such as a patch of colour [Russell]
After 1912, Russell said sense-data are last in analysis, not first in experience [Russell, by Grayling]
'Sense-data' are what are immediately known in sensation, such as colours or roughnesses [Russell]
We live in sense-data, but talk about physical objects [Wittgenstein]
Positivists prefer sense-data to objects, because the vocabulary covers both illusions and perceptions [Ayer, by Robinson,H]
The concept of sense-data allows us to discuss appearances without worrying about reality [Ayer]
Maybe 'sense-data' just help us to talk about unusual perceptual situations [Lacey]
Sense-data are neutral uninterpreted experiences, separated from objects and judgements [Angeles]
We can be looking at distant stars which no longer actually exist [Dancy,J]
Visual sense data are an inner picture show which represents the world [Blackburn]
Sense data avoid the danger of misrepresenting the world [Williams,M]
Sense data imply representative realism, possibly only representing primary qualities [Audi,R]
Sense-data (and the rival 'adverbial' theory) are to explain illusions and hallucinations [Audi,R]
Sense-data leads to either representative realism or phenomenalism or idealism [Robinson,H]
One can taste that the wine is sour, and one can also taste the sourness of the wine [Crane]
The traditional supports for the sense datum theory were seeing double and specks before one's eyes [Crane]
The structure of the retina has already simplified the colour information which hits it [Chalmers]
'Sense-data' arrived in 1910, but it denotes ideas in Locke, Berkeley and Hume [Mautner]
Sense-data have an epistemological purpose (foundations) and a metaphysical purpose (explanation) [Maund]