why some animals learn to walk minutes after they are born, but humans can take a whole year to do that?
In: Biology
Most replies here put the cart before the ox. It is more accurate that the fact that primates are generally atricial allowed us to supersize our heads.
What really is the cause for altiriciality is that primates are grabby, and none of them more grabby than homo sapiens. Instead of the mother and the offspring running away from a predator, the mother grabs the offspring (more often though, the offspring is attached to the mother for most of the time) and runs away. This makes it relatively unimportant for newborns to learn how to run quickly, thus this trait was lost tens of millions of years ago.
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