The other part of the "some" is that we're really talking about some portion of the visual system here. A model that can infer the geometry of a bus from a partial image of a bus having being shown lots of partial models of buses is a potentially very useful model (potentially one vastly superior at drawing buses to humans), but it's some way from a theory of mind and frankly doesn't sound that similar to how human brains conceptually model buses, where the basic shape is something operating at a very low level of our subconscious...