Um, read this article.
http://news.bbc.co.uk/1/hi/sci/tech/7440217.stm
***
I hate to point out the obvious, especially when ego and research dollars are at stake. And I'm not slamming the study of the origins of the universe. As an amateur astronomer I love that kind of research.
But here's the really dumb part. Instead of just studying the nature of the universe, some scientists explain that understanding "how" the universe or universes were created will "explain" why time exists. By time they mean the single direction progression of events from a before to an after.
Um, and that is difficult to understand for what reason? Scientists have gotten this weird (and I suspect New Age related) bias that somehow time is like a choice. It's like they think that it's "just as likely" that "random chaotic non sequential" events or life could exist, and that for some technical reason a sense of time, as in before and after, is "forced" on our universe and perceptions. Huh?
What is time? Time is the name that we give to events and materials that have a before, during and after. Time is our name for reality, not a force that is imposed on reality. I mean, duh. Does anyone except a pot head think that a human could suddenly pop out of space as an old man, then suddenly be going to kindergarten, and then next being a fetus, and then next burying children he had not had yet? And even THAT would be an example of time because time is human's way of describing a sequence of 4 events that I just described. Time is the name and measurement that we give to reality, not a force of its own that is forced upon the universe.
Cure for cancer anyone? Feeding the hungry? Cleaning up the oceans? Gosh I can think of so much more useful things to spend money on than wonder "why time exists" when time is just one of the names and measurements that we give to reality.