Originally Posted by SingleDad
Good question. One of the big problems I think, is that if the CMBR was the edge of the universe (instead of just the limit we can see because of the age of the universe and the speed of light), we would have to infer Earth is at the centre of that universe. The Cosmological Principle (and the Copernican Principle) argue that we should not consider Earth to occupy a special place in the Universe (however special Earth is to us!).
Every time in history that people thought we were the centre of the Universe, it turned out they were wrong!
I loved this show by the way!
"Space is big. You just won't believe how vastly, hugely, mind- bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space."
Douglas Adams, The Hitchhiker's Guide to the Galaxy