[hatakikakashi]

I don't think that's necessarally true. It would build up unbelievably fast speed but maybe not very fast acceleration. I understand the tight rope theory (I think) but if it still expanding at a constant unchanging rate, it will expand forever and thin out and die just like you said would happen. Plus why hasn't that happen yet? J/K If you think that nothing lasts forever, and there is no god then why can't the universe be heading for disaster? I don't know if god is out there or if we made him/her up, but I do think that eventually the entire universe will come to and end. Maybe there is some grand system in place that will start everything over and over. Maybe this is the one shot that life in the cosmos gets I don't know. I think it's at least a possibility that the universe will die out.