That people don't understand the first thing about signs, or the next, or the next, a hard pill to swallow, again and again.
Read another trite rehearsal of the superiority of discursive reason over imagination earlier, the written word as such vs. TV & splashy magazines, reheated McLuhan with an axe to grind, no sense of history, at least not an honest one, oh ick, ick, ick.
Cool abstraction provides a pleasing illusion of subtlety & depth, of freedom. Among other things.
That the viewer knows next to nothing about how the pictures work on them is no reflection on pictures, words were once like this, examples are easy to come by.