On Mon, 13 Jan 2020 at 13:48, Alan Grayson <[email protected]> wrote:
> > > On Sunday, January 12, 2020 at 8:58:06 AM UTC-7, John Clark wrote: >> >> On Thu, Jan 2, 2020 at 2:30 AM Alan Grayson <[email protected]> wrote: >> >> >>> *> If we're convinced it's finite in age, then it can't be infinite in >>> spatial extent. AG * >> >> >> We don't know for sure our universe is infinite in size and we'll never >> know for sure because we'll never be able to measure precisely zero >> curvature with no error at all, but we do know it's pretty damn flat, if >> it's curved it's so slight that a light beam would have to go at least 500 >> times as far as our telescopes can see for it to return where it started. >> So if you respect the empirical evidence for the Big Bang but the idea of a >> beginning of a infinitely sized universe makes you unhappy then the >> Multiverse idea offers you an obvious solution, you get an infinitely large >> infinitely old Multiverse but with the observable universe having a >> beginning and being only finitely large. However I understand the >> Multiverse makes you unhappy too. I fear you may be destined to be unhappy. >> >> By the way ... does the inverse also make you unhappy, something >> infinitely old but finite in spatial extent? >> >> John K Clark >> > > *All the models pictorially represented, have the Universe beginning very > small, and inflation is claimed to increase its size from, say, much > smaller than a proton, to about the size of the Earth or Solar System in a > few Planck intervals. If it begins small, or if you run the clock backward > it becomes progressively smaller, how could it have started with infinite > spatial extent? Don't you see something wrong with the model? AG* > The model says that a subset of the universe starts small and gets bigger. This is not inconsistent with the whole universe starting and remaining infinite in spatial extent. > -- Stathis Papaioannou -- 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/CAH%3D2ypW%3Dz_%3DZ1z7ZgFg%2BCpb9DSM0317Tmtibv1TkOUJCn_ep-w%40mail.gmail.com.
