There's a similar idea in Greg Egan's recent Orthogonal trilogy [1]. It's a fascinating series that explores a universe with different law of physics from our o

There's a similar idea in Greg Egan's recent Orthogonal trilogy [1]. It's a fascinating series that explores a universe with different law of physics from our own, with the physical implications worked out in considerable detail. One of the more intriguing (although hand-wavy) ideas is that in this universe, it's fairly straightforward to construct a device to send information backwards in time -- but if you actually do so, social and technological progress will immediately grind to a halt, on purely thermodynamic grounds. The idea is that any information that you send back seems to "appear from nowhere" as part of a stable causal loop, and so the entropically-favored outcomes are the ones where as much of the information as possible is uninteresting. [1] http://www.gregegan.net/ORTHOGONAL/ORTHOGONAL.html http://www.gregegan.net/ORTHOGONAL/ORTHOGONAL.html