Posted: Sep 30, 2017 3:51 pm
If you've ever stood on a flat surface on which a straight line joining any two points would wholly lie you've been on a plane.
Such a brane ..
Lifeboat for the rational mind :D
http://www.rationalskepticism.org/
http://www.rationalskepticism.org/viewtopic.php?p=2586412#p2586412
If you've ever stood on a flat surface on which a straight line joining any two points would wholly lie you've been on a plane.