http://www.youtube.com/watch?v=PSQbIJKuIBY&feature=player_embedded#at=59
The professor is factually wrong claiming the Big Crunch contradicted by dark energy accelerating the universe forever.
What about Roger Penrose's cyclic universes theory - wrong for the same reason? Surely Penrose knows about dark energy.
http://physicsworld.com/cws/article/news/44388
I think I see Penrose's mistake that inflation cannot explain entropy. It can. I do it in my book Destiny Matrix and in the published IOP paper with Creon Levit (NASA AMES).