 In a community where seeing-in is firmly established, some member of the community—let us call him (prematurely) an artist—sets about marking a surface with the intention of getting others around him to see some definite thing in it: say, a bison. If the artist’s intention is successful to the extent that a bison can be seen in the surface as he has marked it, then the community closes ranks in that someone who does indeed see a bison in it is now held to see the surface correctly, and anyone is held to see it incorrectly if he sees, as he might, something else in it, or nothing at all. Now the marked surface represents a bison. (Wollheim 1987: 46)