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Aseyhe t1_jc9rx8m wrote

It's fine to view space as expanding, since again, that represents a convenient coordinate choice. I use it frequently in calculations. The key point is just that this "expanding space" doesn't have physical consequences.

It's like how two people walking due north from the south pole will gradually separate from each other despite walking in the same cardinal direction, but the process of walking north doesn't induce an expansion force on your body.

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