That's only because we have a difficult time thinking (without math) outside of our 3 dimentional physicality. It would be like trying to explain a sphere to a circle. Circle says, "Well I'm perfectly round... how much more round can something get?" They try to explain that he is flat-round, and he just can't comprehend the statement. So the Sphere goes on it's merry way and Circle spends the rest of his life trying to understand the statement.

We don't live in a sphere of expanding "stuff" that had a beginning at some point in space and is getting bigger. The entire universe started as a small point... so that you & me and whatever is alllllll the way across the universe now... in ANY direction were all crammed into one place. AND WE STILL ARE... the place is just getting bigger and moving us apart from each other. Not into "where" It's still the same space... just bigger.


"Flat" universe doesn't mean like a record... it means flat in 3 dimentions. Like a cube grid, and as you move through the grid, it eventually folds back into itself.

So try to imagine a 4 dimentional sphere, and you get a better idea.