On 1/13/2020 5:52 PM, Alan Grayson wrote:
On Monday, January 13, 2020 at 5:12:33 PM UTC-7, Brent wrote:
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
*How about if I quote you? You wrote earlier it could be infinite "at
the start", "initially". This suggests at the instant of the BB, it
became infinite. *
No. "Became" would not be "at the start". That's why I want see what
you quoting. You ability to interpret seems inventive to say the least.
Brent
*I interpret this to mean a process resulting in infinite extent.
which took zero time; hence a singularity. Your other alternative is
that it inflated hugely in a finite time interval. I can see this, but
then it couldn't be infinite in spatial extent. AG *
*That's a great way to communicate. Would you buy a used car from
one of those guys? AG *
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