The Tree of Knowledge and the Neocortex

The story of Eve is actually quite similar to what… the scientific evidence suggests for the origin of primates… [a necessary] preadaptation for acute vision and large brains was the enjoyment of a diet of fruits and nectar (Eve’s fruit). When snakes (the Serpent) appeared, a particularly powerful selective pressure that favored expansion of the visual sense, only ancestral mammals having a diet of fruits or nectar from flowers in that arboreal milieu could afford to expand their visual systems, as such expansion typically occurs at a cost to olfaction. Only those mammals that ate odoriferous foods such as fruits and flowers could afford to reduce their sense of smell and still find their food efficiently.1

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