"this is a physics site. As such, discussions must be grounded in physics." To be grounded in physics only, we must stick to the present, where we know, and not just guess that physics applied. Unless we had some real evidence or proof that the state of the universe was the same in the past. We don't. Therefore to claim it was is religion. Is that really what this site is about???? I mean really?? Are not claims of the early universe built in to astronomy inseparable from the "science"?? Perhaps a fresh look is needed to see if they really are inseparable? After all, science is not some priesthood, seeking to defend just it's beliefs, is it?! There is no proof the past was physical only, as the present. Is there? If so, where is it!? Can you defend it with reason, and evidence, or only by closing a thread with iseas such as this??? We shall see.