Randomness is an interesting topic indeed. For instance, up until 2012 introduced with Ivy Bridge, a true hardware-based random number generator hasn't been av

Randomness is an interesting topic indeed. For instance, up until 2012 introduced with Ivy Bridge, a true hardware-based random number generator hasn't been available to the masses. (http://en.wikipedia.org/wiki/RdRand http://en.wikipedia.org/wiki/RdRand) what we believe to be random may not be, and I've seen UUIDs generated on cheap mobile devices can easily collide when their clock battery is dead.