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What we see is not what is out there. We saw some examples of the brain making different guesses of what could be out there. What interests me is how the brain can combine guesses and information from different structures to create new ways of seeing. I find it amazing that by having two eyes that create different images the brain simply concluded that thus there should be dept and looks for information to support that guess in other senses as well as monocular evidence. When talking about these observations that the brain makes and how it uses them in comparison to each other I also think that learning is an important factor. When I was small I could never see the images hidden in the stereogram. It would drive me crazy; I would stare at the book for hours trying to see the hidden images. When I look at a stereogram today I do however see the images appear. It takes me some time and effort but in the end I can see the images coming out to me. It is as if you look into a different world or dimension that was not there before. Learning and practice thus do seem to have an impact in creating new guesses that the brain can make.