Thursday, March 22, 2007

Source of Information

The insight of Bennett on Maxwell's daemon shows that the information can not be easily erased. By the time symmetry of physical laws, the information can not be easily created, either.
There is this ad hoc observer in quantum mechanics that can collapse the state of a system and create information. And there is also this black hole of Hawking that seems to erase information. How are they connected?

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