The nervous systems of billions upon billions of creatures evolved into greater and greater complexity over hundreds upon hundreds of millions of years. Then beginning two to three million years ago, severe planetary changes forced the central nervous systems of anthropoid bipeds to add brain matter, gray and white, at an average rate of one milliliter every three thousand years.3 The front-most portion of the prefrontal cortex known as Brodmann area 10 sits just behind the forehead. During human evolution, its six cortical layers expanded enormously in both size and reticulation, forcing the
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