I read something interesting recently about how most discussion of brain function is 'tainted' by metaphor, these days usually involving computers. Basically the concept was that our brains don't process and store information like a computer does, but because computers come the closest to accomplishing what our brains do it's the easiest point of reference for us when discussing brain function.

Since I don't really know anything about brain science and know a little about computer science I find it pretty hard to escape that metaphor and imagine how a brain can function without doing what a computer does. This type of article does give me a bit of an inkling though.