Well, probably not - because in order to apply this energy to your
brute-force calculation process you presumably have some way of
capturing it, thereby making it unavailable for use in the destruction
of the cosmos.  :-)

Nope! That thermodynamic analysis is how much heat you have to dump in the universe. (Well, entropy, actually, but to a first approximation that's the same thing.) For more details, check Wikipedia's writeup on the Landauer bound:

http://en.wikipedia.org/wiki/Landauer%27s_principle

So, yeah, it really is as catastrophic as I make it out to be.  :)


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