It's a sensible question: why is the brain, arguably the most important organ in an animal's body, covered in a thin bone shell on a stalk rather than behind the protection of the central body mass? In short, it's because animals evolved to have all of the major sensory organs – eyes, ears, nose, mouth – clustered in one location, and over time this clump of neural networking evolved into what we now know of as a brain.
You can watch the video give a much better explanation of this process – with construction paper cutouts, no less – AFTER THE JUMP…
