Here is your problem...
Quote:
Originally Posted by Mechphisto
I picture myself floating in space with two impossibly powerful laser lights. And they're wrapped together perfectly side-by-side as to (appear) perfectly parallel. They're 1 cm apart at the source.
Now, in a geometrically spherical universe, once they get out far enough the two lines will be 2 cm apart, and 3, and eventually 1km apart?
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This is where you are getting lost.
It isn't a sphere. It is FLAT. The curvature is not like a ball. That's 2D. This is the surface being curved in 3 dimentions. Not 2.
We aren't inside the ball. We are on it, and up, down and sideways is every direction depending on where you are.
Are the people on the opposite side of the earth upside-down? Of course not. Just relative to you.
You are not inside the universe. You are part of the whole. There is no center to the surface of a sphere.
Your parallel lasers would stay parallel forever until they hit you in the back of the head.