Joseph Lazio wrote:
"BC" == Bob Cain writes:


BC Joseph Lazio wrote:


This statement fails to distinguish between the observable
Universe, which did indeed once fit inside a space smaller than the
head of a pin, and the entire Universe, which may very well be
infinite in extent.


BC How long would it take such a universe to become infinite?

The Universe didn't "become" infinite in spatial extent (if in fact it
is).

Right, nothing can "become" infinite. It was a leading
question. We are left, it seems, with the idea that if the
universe is infinite in extent, it went spatially from
nothing to infinite in the initial instant. That's really
hard to come to any kind of grips with.


The problem here is that many people (based in part on poor
descriptions from my learned colleagues) think that the initial
singularity in the Big Bang model was a point in space. It wasn't.
It was a point in time.

But what can be said about space at that time. If there was
no time before that point, was there no space either?


Thanks,

Bob
--

"Things should be described as simply as possible, but no
simpler."

A. Einstein