News for hackers. Stuff that matters.

A comment on Why Email isn't Dying. Parent comment

Re:Why Email isn't Dying by DrJokepu on Tuesday October 20, 2009 @09:10AM (#892300)
If I remember correctly, two lines being both parallel and orthogonal is quite possible in Hyperbolic (Non-Euclidean) Geometry.
[ Parent | on HN ]
Re:Why Email isn't Dying by 10ren on Tuesday October 20, 2009 @09:27AM (#892316)
Parallel lines of longitude converge orthogonally at poles.
[ Parent | on HN ]