On Tue, 14 Jan 2020 at 07:59, Alan Grayson <[email protected]> wrote:
> > > On Monday, January 13, 2020 at 1:22:05 PM UTC-7, Brent wrote: >> >> >> >> On 1/13/2020 11:02 AM, Alan Grayson wrote: >> >> >> >> On Monday, January 13, 2020 at 11:20:41 AM UTC-7, Brent wrote: >>> >>> >>> >>> On 1/13/2020 2:21 AM, Alan Grayson wrote: >>> >>> *Forget about matter. I am discussing spatial extent. If it starts >>> small, and expands at any rate less than infinite, its spatial extent >>> cannot be infinite. AG * >>> >>> >>> But so what? What is "it"? and what are you worried about? If "it" is >>> some portion of the universe we can see, it's finite. The inference that >>> the universe is infinite is based on curvature measure in the part we can >>> see. >>> >> >> >> *IT, the universe, has (IMO) a very small but positive curvature, which >> is what we measure. Since we can't precisely measure zero curvature, as JC >> earlier stated, there's no way to distinguish the two cases -- flat and >> infinite in spatial extent versus spherical and finite in spatial extent -- >> on measurements. But since flat and infinite at the instant of the BB >> implies a singularity, I reject that model. AG * >> >> >> Fine. Nobody thinks there was a singularity. >> >> Brent >> > > *They think it's infinite at the beginning but always represent it as very > small at the beginning. That's a great way to communicate. Would you buy a > used car from one of those guys? AG * > The visible universe is very small at the beginning, but the visible universe, at the beginning as now, may not be all that there is. > -- 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%3D2ypVw--QqxaMDeZUs5wvm6VCmcc7uK%3DQPAck4Fn%2BoE9--iA%40mail.gmail.com.
