This paragraph from page 3 of The Accidental Mind is a good overview of our brain and why it is so fascinating.
The brain is not elegantly designed by any means: it is a cobbled-together mess, which, amazingly, and in spite of its shortcomings, manages to perform a number of very impressive functions. But while its overall function is impressive, its design is not. More important, the quirky, inefficient, and bizarre plan of the brain and its constituent parts is fundamental to our human experience. The particular texture of our feelings, perceptions, and actions is derived, in large part, from the fact that the brain is not an optimized, generic problem-solving machine, but rather a weird agglomeration of ad hoc solutions that have accumulated throughout millions of years of evolutionary history.
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