The puzzle of time
One thing that’s painfully clear to all of us is that time has a direction. It marches onwards with horrifying regularity and there is no way of turning it back. From a physical viewpoint, this direction of time presents a puzzle, because it’s not there in the fundamental laws of physics.
via Pocket http://plus.maths.org/content/puzzle-time-0
September 27, 2013 at 09:10PM