I’m very interested in the evolution of vision, how it is that we can become cognitive in the sense that we act by understanding from simple response to stimuli. And I think this is a very interesting thing. I think it goes from reception, if you like, to perception, then to conceptions where you can think explicitly. I think there are these three big stages and there are different parts to our brain which represent these three stages in evolution and I’m really quite interested to develop that further. I think it’s very interesting both evolutionarily and in thinking about how the brain is organised and the relationship of perceiving something to understanding is a very peculiar one. For example, you can have an illusion, say, a distortion illusion or any sort of these things you get in children’s books of weird things happening, you can know that you’ve got this illusion, you can explain it and you’ve still got the thing. In other words, your understanding of it, awareness of it, in-in terms- explicit understanding, does not destroy the illusion, the perception, so that perception, how we see and how we understand, are amazingly separate. It really is an amazing thing this, and of course this has relevance to teaching when you can show somebody the truth and in a way they can see it perhaps and not understand it and other occasions you can understand what’s going on but you can’t see it properly. For example, there are illusions called Impossible Objects or Impossible Figures, which you simply cannot make sense of them at all. They look impossible. You can understand why they look impossible conceptually but you still can’t process it in the visual system so the brain is in separate modules and one module doesn’t always talk to another. This, I think, has huge implications and moral implications really because one bit of your brain is giving a certain behaviour but another bit of the brain can’t assess that, can’t appraise it, can’t judge it, can’t criticise it, and of course we’re several people, we’re not really one person in our heads; we’re lots of people trying to talk to each other and often failing within the brain. I think these things are quite important really.