Quote:
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Originally Posted by Ian Goddard
"Imagine a checker board, or metric, spread across all space..." That onto which the checker-board metric is being mapped is "all space," and the edges of all space are unknown.
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This is why I prefer the expanding balloon analogy. The checkerboard analogy requires an infinite space: the expanding balloon is finite.
If you're on the surface of an expanding balloon (2d surface expanding in 3d), as it expands, objects move away faster the further they are away from you. You appear to be the center, but every other point on the balloon can say the same thing. It also makes it possible to travel around the balloon and get back where you started - an interesting possibility for 3d space.
So, regardless of whether the universe is finite or infinite, there still isn't a center.