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Shape and size of the universe
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Selected claim, opposing its parent
Álvaro
If the universe had the shape of a saddle, we could not travel in a straight line, something that has been proven to be possible.
Pros
Cons
Con claim 1, children below
Izam
We could never return back in a straight line. In terms of explanation, if you go straight on a flat universe there's a "point" where you would reach the end, which would make you to turn back and change the path making therefore a small curvature in your path. "Unless the Universe repeated on a scale that was less than about 15 billion light years in diameter today, we'd have no way to ever return to our original starting point by traveling in a straight line"
Izam
