Cosmology: our galaxy is an oddball (Introduction)

by dhw, Thursday, October 26, 2017, 12:24 (2375 days ago) @ David Turell

DAVID: I have no idea why the universe is so big. All I know is our galaxy is special.

dhw: Agreed, but according to the article, “it is likely that each [galaxy] will be, in some way, peculiar”. So each galaxy is likely to be special. And if this is true, and if we are faced with the possibility of an infinite number of different galaxies, the odds are that eventually at least one of those different galaxies would produce the special conditions necessary for life.

DAVID:I maintain that we do not know that there are infinite galaxies in this universe. 'Infinite' is the basis of your argument, the same argument as in multiverses.

Of course we don’t know. Nor do we know if there is a God. That is why we put forward all these different hypotheses, and then try to test their logic. Even you acknowledged that if your God existed, you had no doubt that he would have made many universes and so “there is probably an infinity of galaxies.” You have no idea why the universe is so big if all God wanted was to create the brain of Homo sapiens. So maybe that wasn’t all he wanted. Or maybe he isn’t even there.