Well, I'm sure most of you have heard of the theory where the universe is a 4 dimensional circle/sphere (hyper shere?) so it has no end but no boundaries. (usually the example of a 2d world ona sphere is given).

Now, if we wanted to find if we were actually on this sphere, (think in 2d here) we'd get 3 people, they'd each start moving away from each other (120 degrees between each direction, perfect triangle). Then they'd stop... say 1000 miles away from the starting point. They then measure the distances between them (somehow)... If they're on a sphere the distances will seem too small won't they?

But then.. what if the sphere isn't a sphere, but jsut a 3 dimensional object? What if they're on a flat area, so the measurement seems to dispro-..


ugh, my head.