Permutation City by Greg Egan has a very similar idea at its heart. According to wikipedia Tegmark has cited the novel, so apparently he agrees about the similarity.
http://lesswrong.com/lw/1jm/getting_over_dust_theory/
Permutation City by Greg Egan has a very similar idea at its heart. According to wikipedia Tegmark has cited the novel, so apparently he agrees about the similarity.
http://lesswrong.com/lw/1jm/getting_over_dust_theory/