Full Idea
The wavelengths of the light entering the eye are only indirectly related to the colours we see objects to be.
Gist of Idea
Light wavelengths entering the eye are only indirectly related to object colours
Source
Daniel C. Dennett (Consciousness Explained [1991], 12.2)
Book Reference
Dennett,Daniel C.: 'Consciousness Explained' [Penguin 1993], p.375
A Reaction
This is obviously bad news for naïve realism, but I also take it as good support for the primary/secondary distinction. I just can't make sense of anyone claiming that colour exists anywhere else except in the brain.