[Avery Andrews 091001 2:25 Eastern Oz Time]
(Bill Powers (960929.0900 MDT))

What I don't understand is why we need predictors in the visual hierarchy.
Does visual perception concern only the future? When I look around me, am I

I think that the `predictions' they're talking about are expectations
about the low-level details of the scene, based on its hi-level
categorization. E.g. it's supposta be a face so there must be a nose
somewhere. The details are quite beyond me, however!