On Tue, Feb 06, 2007 at 12:23:19PM +0100, Bruno Marchal wrote: > > > It *could* be the contrary. In quantum mechanics a case can be given > that it *is* the contrary. It is by taking the full set of (relative > histories) that the quantum phase randomization can eliminate the > quantum aberrant histories (cf Feynman paths). > It works with the QM because of the existence of destructive > interferences, and somehow what the computationalist has to justify is > the (first person plural) appearance of such destructive effects. > > Bruno > > > http://iridia.ulb.ac.be/~marchal/ >
The informatic "destructive effects" are due to conflicting information reducing the total amount of information. If I have the sentence "the sheep is totally black and the sheep is totally white", then I have rather less information about the sheep than if I had (say) "the sheep is totally black". Addition of information obeys the triangle inequality I(a+b) \leq I(a) + I(b) Curiously, addition of wave amplitudes in QM also obey the triangle inequality. I suspect there is more to this connection than mere coincidence, although I haven't spent too much time trying to work out the details. Cheers -- ---------------------------------------------------------------------------- A/Prof Russell Standish Phone 0425 253119 (mobile) Mathematics UNSW SYDNEY 2052 [EMAIL PROTECTED] Australia http://www.hpcoders.com.au ---------------------------------------------------------------------------- --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to everything-list@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/everything-list?hl=en -~----------~----~----~----~------~----~------~--~---
