David Deutsch Wrote:: > > Many mathematicians to this day don't realize that information is physical > and that there is no such thing as an abstract computer. Only a physical > object can compute things.
Bruno Marchal Wrote: > > That approach makes mysterious mind, matter, and the relation between. The relationship between mind and brain is no more and no less mysterious than the relationship between nouns verbs and adjectives. > > > mathematicians does not need the assumption of physicalness to define and > reason about information. Not even about quantum information, Then the real mystery is why mathematicians haven't become billionaires by starting computer hardware companies with zero manufacturing costs. > > > Did Landuer realized that the concept of purely abstract natural numbers > doesn't make sense? Yes, in fact he went further, Landuer used his physical brain to deduce that sense itself doesn't make sense without physics. I'm not certain his deduction was correct but it very well might be. > > Also, QM assumes the natural numbers. The more general theory of waves, > eve just trigonometry assumes the natural numbers. But was that assumption correct? I don't know. There are a infinite number of natural numbers but nobody has ever seen a infinite number of anything and nobody has even come close. > > > The theory of natural numbers does not assume a physical reality. If the natural numbers are a human invention then they are the result the physical reality inside the human skull. >> >> Landauer focused on what restrictions the laws of physics imposed on what >> kinds of computation can be done." >> > > > > Can be done relatively to some resource. You can't calculate what 2+X is if you're lacking information on the value of X. Deutsch is trying to reformulate physics in such a was as to say for example energy is conserved because information is lacking at a certain space under certain circumstances. That why he's so optimistic, he thinks all problems can be solved with enough information. He even says that evil is the result of a lack of information; I'm not sure I'd go that far but it sound interesting and I wish him luck. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
