User blog comment:ProfessorMcG/Time Travel. Is it possible?/@comment-1777104-20100815011130

First, time travel: I wrote about this on my blog (which see), however, quickly. If time travel into the past were possible, you would either be able to just be part of an until-then unknown past in your own time line OR you would change another time line never to know if that change "worked" after you return to your own unchanged time line. If however, the time traveler was "trapped" in the time line (reality) when he "returned to the present," he might find himself existing alongside himself. This would cause huge problems unless all time lines are separate parallel realities that differ only at tiny points in nearby "dimensions."

About life on other planets: Even if life on other worlds is possible, I does not follow that it is either necessary or common. The conditions that make life possible are quite narrow, as has been pointed out above. In the process of fantasizing about future human developments in science, Jazon hit on the paradox that atheists have come to concede - evolution on earth had to be directed by some alien intelligent race that itself had evolved somewhere else! That we will some day be gods is the tenet of various religions, in fact. And that the "gods" of our myths were just advanced humanoids is even more prevalent. But alas, this only pushes the argument further into the unknowable past (ah, the time travel connection) or it throws us into a "vicious circle" of confusion.

Tb, We certainly cannot question the wisdom of the Creator on this, can we? To do so would to either project our finite understanding into His infinite mind OR just drop back on the assumption that God was, or even is still "just like us." In the record of the Bible we have been told that God is going to rebuild not just the earth but the whole universe for an eternal dwelling place for mankind. What part do all these potential worlds have in that rebuilt universe? Can not billions of those "rocks" be reserved for use in an unbelievable future past that day when all things become new?

Now that, Jazon, is something to sleep on.