On 1/13/2020 12:59 PM, Alan Grayson 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. *
No they represent all the universe we can interact with as small then.
If you have something to question, how about quoting it explicitly;
instead of your interpretation.
Brent
*That's a great way to communicate. Would you buy a used car from one
of those guys? AG *
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