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Re:Lost Causes of Theoretical Physics (2003) by posterboy on Saturday March 03, 2018 @08:05AM (#16509118)
> the universe would be like the inside of a sphere.

The surface of which is "flat"? The interior surface, if that's the right word. Like living on the Event Horizon of a black hole. So we don't and hardly can know what's outside or inside or on the outside or inside.

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