![]() ![]() The black-hole information paradox split physicists (or at least those that cared about what black holes ate for lunch) into two groups. ![]() It was random and so it couldn’t secretly carry any hidden messages about zoo animals, or anything else that may have been swallowed. The trouble with this idea was that, as far as most physicists, including Hawking, were concerned, the radiation was just like heat emanating from a hot coal. The alternative was that quantum theory is correct and this information is somehow encoded into the escaping radiation - so by studying the radiation, you could infer whether or not the hole had once chowed down on an elephant or a giraffe. Hawking originally assumed that it did, but this upset many physicists because the laws of quantum theory do not allow information to just vanish from the universe. ![]()
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