SLD
Contributor
OK, I’ve read something that perplexes me.
Information isn’t destroyed in classical physics because it just changes form. If you burn a letter, the information in it is still encoded in the wisps of smoke and other residue of the letter. However the atoms that encode the information are subject to quantum mechanics and as a result may change subtly over time due to minor quantum fluctuations, or even due to quantum fluctuations of the vacuum.
To what extent would this destroy the information over time and make it unrecoverable by even the most powerful computations? It would seem to me that over many years, the unpredictability of quantum mechanics would create instances where the history of a particle would be impossible to recreate, and thus the information would be lost forever.
E.g. a letter burned back in Julius Caesar's day would have at least some of its particles jostled in such a way that the letter could not be resurrected. Or maybe it would take a million years, but eventually it is gone.
Thoughts?
SLD
Information isn’t destroyed in classical physics because it just changes form. If you burn a letter, the information in it is still encoded in the wisps of smoke and other residue of the letter. However the atoms that encode the information are subject to quantum mechanics and as a result may change subtly over time due to minor quantum fluctuations, or even due to quantum fluctuations of the vacuum.
To what extent would this destroy the information over time and make it unrecoverable by even the most powerful computations? It would seem to me that over many years, the unpredictability of quantum mechanics would create instances where the history of a particle would be impossible to recreate, and thus the information would be lost forever.
E.g. a letter burned back in Julius Caesar's day would have at least some of its particles jostled in such a way that the letter could not be resurrected. Or maybe it would take a million years, but eventually it is gone.
Thoughts?
SLD