On Sun, Jun 27, 2021, 6:01 PM Bruce Kellett <[email protected]> wrote:
> On Mon, Jun 28, 2021 at 8:50 AM Jason Resch <[email protected]> wrote: > >> On Sun, Jun 27, 2021, 5:38 PM Bruce Kellett <[email protected]> >> wrote: >> >>> On Mon, Jun 28, 2021 at 12:10 AM Tomas Pales <[email protected]> >>> wrote: >>> >>>> On Sunday, June 27, 2021 at 2:30:56 PM UTC+2 Bruce wrote: >>>> >>>>> >>>>> Our confidence that the sun will rise tomorrow is not based on any >>>>> induction from a large number of previously observed sunrises. >>>>> >>>> >>>> What is it based on then? >>>> >>> >>> >>> Essentially on the law of conservation of angular momentum, coupled with >>> our detailed knowledge of the structure and dynamics of the solar system. >>> Besides, the sun will not rise tomorrow in Antarctica. >>> >> >> What is your assumption that the conservation of angular momentum will >> continue to hold throughout the night based on? >> > > > Largely on symmetry. The conservation of angular momentum is related, by > Noether's theorem, to the isotropy of space -- largely its rotational > symmetry. One can have confidence in the continuation of angular momentum > conservation because there is nothing in prospect that will spoil this > symmetry -- the rotational invariance of space. > > You cannot, of course, rule out the idea that the universe will suddenly > become random, and symmetries will no longer obtain. If you want to worry > about that possibility, feel free, but don't bother me with your paranoia. > I don't fear it suddenly changing, but it's valid to ask why we should not fear it, or: why is the probability deemed low that the laws will stop working? Since empiricism is not logically required in the set of logically possible worlds, it is then a phenomenon we should try to explain. I admire Tomas for questioning something many scientists might take as a given. Jason > Bruce > > -- > 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 view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/CAFxXSLTj_5GCsU2Ucmh7%3D6XougYQOmKmPPxYA3RSi44POHZvUQ%40mail.gmail.com > <https://groups.google.com/d/msgid/everything-list/CAFxXSLTj_5GCsU2Ucmh7%3D6XougYQOmKmPPxYA3RSi44POHZvUQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CA%2BBCJUjC514nJEpNSTVDZrmPL4xaUiXEevEpMoenwyjmmx%3D%2BHQ%40mail.gmail.com.
