[Barset]

"All these ideas are quite clear once you have progressed beyond a certain level."

That "certain level" presumably is knowing how these theorists define infinity, entropy, and increase, since their ideas are, from the standpoint of semantics, not clear at all. They are contradictory, rather. b.

[RightWhale]

What have you read or what are you reading in physics or cosmology? There is an excellent recent book by Brian Greene, The Fabric of the Cosmos, that is very readable and very sound and addresses these very concepts. Alan Guth wrote a similar book a couple years ago that conveys more of the excitement of discovery; he is one of the creators of current cosmology, but less philosophical than Greene.