A Crowded Pantheon of Primate Relatives
On one hand, I'm just fascinated by this entire world crowded with proto-hominid and other primate species. The question of how Ardi's home in a wooded environment affected bipedalism and brain development has my little brain racing.
On the other hand, there's just not a lot of material for these conjectures. And, yes, the questions are compelling, but it also creates yet another salient through which Intelligent Design crackpots can attack Darwin - since a social explanation for bipedalism, not a technol