>> Interesting fact: In elliptic geometry, pi is less than arcsine 1.
> 
> It's less than arcsine 1 where you're sitting right now. That's why they 
> say gravity bends space-time.

Space-time is an inhomogenous space anyway. I hear that gravity bends it 
with positive curvature, but the universe itself appears to have 
slightly negative curvature...

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