On Sunday, October 21, 2018 at 10:43:28 AM UTC-5, Tomas Pales wrote: > > > > On Sunday, October 21, 2018 at 4:28:21 PM UTC+2, Philip Thrift wrote: > >> >> "reality contains all mathematical objects" >> >> >> Ironically, Tegmark doesn't believe that at all. He says infinite >> mathematical entities are "ruining physics". >> - >> http://blogs.discovermagazine.com/crux/2015/02/20/infinity-ruining-physics/ >> >> >> The only thing to conclude is that Mad Max published his mathematical >> universe hypothesis as a joke! >> - https://en.wikipedia.org/wiki/Mathematical_universe_hypothesis >> > > Already in his Mathematical Universe paper on arxiv, Tegmark discussed a > restricted version of MUH called CUH (computable universe hypothesis). He > mentioned that the attractive feature of CUH would be the disappearance of > the measure problem and also the exclusion of structures of which we may > never know whether they are consistent (due to Godel's second > incompleteness theorem) and thus whether they exist. On the other hand, the > fact that we cannot calculate probabilities (the measure problem) or find > whether a structure is consistent seems like an epistemic problem, not an > ontological one. The infinities may exist in reality, we just can't extract > useful statistics from them or confirm their existence. But reality doesn't > depend on whether we find it useful or whether we can confirm its existence. > > The universe in which we live, or even the inflationary multiverse, may be > a finite/computable structure but there may also be infinite structures in > the larger mathematical multiverse. >
If our universe does not have infinitely-computing objects but there are other universes that do, that would seem strange. Why would our universe be left out? :) - pt -- 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 https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
