3 ms·
I recall a theory that we do it because of our arboreal lineage. When apes moved into the trees to get away from predators, they would often carry things in the
by zh3 3y ago
I recall a theory that we do it because of our arboreal lineage. When apes moved into the trees to get away from predators, they would often carry things in their mouth (using their tongue to hold them) so leaving their forelimbs free for tree swinging. Hence the connection - if the hands are occupied, the tongue comes out.