This blog as a collective has been dying for this post/commentary for as long as I've been reading it!

If there weren't deep keys to optimization, humans would be unable to achieve a sudden huge advantage over other lifeforms, using brains optimized in the entire absence of direct selective pressures for inventing guns or space shuttles. It would just be a matter of slowly evolving swords, slowly evolving guns, slowly evolving nuclear weapons...

More on this please! I'm convinced that evolutionary psychology has big things to teach us about intelligence, but I haven't thought hard about it as yet.