Man, I'm feelin good. Listening to some Tool and Pink Floyd, wondering if time is infinite or finite. Or even if it exist's at all, are we all in a lapse? Thinking about Gaia now... is the cycle of ice ages the earths breath's?
Time is an abstract concept we use to measure the linear progression of events. Once the universe expands too far and can no longer support stars, there will be nothing in the universe to observe that concept.
^I had this whole response written out... and I hit the back button. The jist of it was, time is linear, but travel through it could be possible. Its the only "infinite" thing in our universe...