I'm a proponent of the "firstborn" hypothesis — we don't see any other signs of life yet because the universe is still in its relative infancy and we're among t

I'm a proponent of the "firstborn" hypothesis — we don't see any other signs of life yet because the universe is still in its relative infancy and we're among the first sentient species to pop up out of the primordial muck. It's anthrocentric, but humans are the smartest people I know so I cut them some slack ;)