and to complement my post above, a couple of links:
http://en.wikipedia.org/wiki/Fred_Ho...ical_evolution
http://en.wikipedia.org/wiki/Roger_P..._consciousness
extra:
penrose on the big bang:
http://www.youtube.com/watch?v=pEIj9zcLzp0
"one good thing about science is that you're allowed to change your mind..."