On 13 February 2014 09:18, Bruno Marchal <[email protected]> wrote: > On 12 Feb 2014, at 18:58, meekerdb wrote: > > That doesn't follow. If there are disjoint worlds, as contemplated in > some versions of cosmology, they may have different physics. > > Nice, comp predicts that this is impossible, although I can agree this is > a matter of semantics, as I define a physical laws to be true for all > universal machines, so disjoint worlds will have only different geographies. >
So you're saying that only those worlds with observers in exist, according to comp? So the physics they observe will necessarily be such that it allows them to exist? (In other words, the "Strong Anthropic Principle" ?) If so, how do you account for us being able to observe an early universe in which there were apparently no observers? Or do we as obsverers create it (somehow) ? You seem to be making your claim a tautology by saying whatever your theory > produces is physics, even if it's not any physics we know of. That makes > it impossible to test. > > Why, the physics we get is non trivial. It is as much testable than > evolution. It explains where the laws of physics come from, and much more. > It is extremely testable, given that it gives the laws, and it is enough to > find one natural phenomenon contradicting Z1* or X1* to refute comp (+ > Theaetetus). But this needs more on "AUDA", so let us not anticipate > everything too much quickly. You jump from step 3 to step 8, and then to > AUDA. Well, it is interesting, but like Liz said, we have to do the dinner > and that kind of things of life, if we want to continue the discussion in > decent condition. > > I must admit I got that impression - thath the answer was something like "comp predicts whatever physics we've got!" However I see that isn't so, so I will be interested to know how it's testable - if I ever make it to understanding AUDA. -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
