Full Idea
Evans introduced the idea that there are some representational states, for example perceptual experiences, which have content that is nonconceptual.
Gist of Idea
Some representational states, like perception, may be nonconceptual
Source
report of Gareth Evans (The Varieties of Reference [1980]) by Peter Schulte - Mental Content 3.4
Book Reference
Schulte,Peter: 'Mental Content' [CUP 2023], p.17
A Reaction
McDowell famously disagree, and whether all experience is inherently conceptualised is a main debate from that period. Hard to see how it could be settled, but I incline to McDowell, because minimal perception hardly counts as 'experience'.