The brain does not like to work. It's a lot of work to have a true picture of the world live inside the brain. So the brain doesn't do that as much as you (it) thinks.
Some of the ways the brain avoids work may give help to people who show computers how to do the work computers do. Here are the ways I will talk about:
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Have lots of little boxes of work. Each box looks for just one thing and knows how to do just one thing. It knows just enough to see the one thing and make the thing it knows how to do happen.
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Many boxes are looking at the same time. The brain is always ready to do something else.
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If two boxes both know the same thing or two, you can make another box to hold what's shared. But you only do that if it makes there be less work. Do that enough and you may get a true picture of part of the world. But most of the time you don't.
