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Comment Re:Theory (Score 1) 591

The phrase "only a theory" suggests that you think there is something beyond that. "Theory" is as good as it gets. (No, "theory" does not get promoted to "law". They're completely different animals.) To say it's "only a theory" is like acknowledging that SCOTUS ruled the Individual Mandate constitutional,but qualifying that statement by pointing out that "it's only the Supreme Court".

Comment Re:Hash Collision (Score 1) 790

There are less than 2^33 people in the world. Most of them probablly don't use google but lets assume that they do. Further lets make a wild ass guess that each one has 2^17 files in googles database (from some googling i'm pretty sure this is an overestimate). That would mean a total of 2^40 files.

Check your arithmetic.

Comment A *single* photon? (Score 1) 347

Can a single photon turn into an electron/positron pair? I didn't think this was possible because a photon has no rest frame, whereas an e-/p+ pair always would. Thus, in the inertial frame in which the pair has no momentum (the "center of momentum" frame), the photon would still have momentum. Thus, momentum would not be conserved. You need two photons moving in different directions for the pair of photons to have a center-of-momentum frame in which their momenta cancel each other out.

You have a massage (from the Swedish prime minister).