Permutation City[1] by Greg Egan is one particular (hard SF) look at this idea. I'm pretty sure there are others, it's quite a common trope. In the (hopefully

Permutation City[1] by Greg Egan is one particular (hard SF) look at this idea. I'm pretty sure there are others, it's quite a common trope. In the (hopefully) real world, there was something fairly recently about possible violations of the Planck length: http://www.sciencedaily.com/releases/2011/06/110630111540.htm http://www.sciencedaily.com/releases/2011/06/110630111540.ht... (news wrapper around http://arxiv.org/abs/1106.1068 http://arxiv.org/abs/1106.1068 ) [1] http://www.amazon.com/Permutation-City-Greg-Egan/dp/006105481X http://www.amazon.com/Permutation-City-Greg-Egan/dp/00610548...