Re: The universe has no boundaries?

From: Lefty (Ye_at_h.Right)
Date: 02/19/05 

Date: Sat, 19 Feb 2005 01:24:10 -0800

The universe does have boundaries, and it also does not.

The universe is finite relative to an observer. However, there really is
more of it beyond that "observed" boundary.

The reason is simlpe. You cannot build a clock out of the whole universe. It
is nearly motionless relative to an observer and so time becomes
unmeasurable and unobservable on some vast scale. Time ceases to exists
relative to an observer on some very large scale, and so 4dimensional
spacetime melts somehow into a 3 dimensional manifold.

That place where the 4th dimension melts into the 3rd is the edge of the
universe relative to you. However, this is a relativistic phenomena, and in
reality the 4th dimension probably continues on into unknown territory.

This is why the universe has a boundary, and it also has no boundary. It
sounds paradoxical, but it really is not a paradox. The words make a
sentence which seems impossible, but the explanation is very simple.

And that is just the beginning.

I do not know what infinity means with respect to spacetime. I do not know
if cardinality makes sense at all. I cant even model my ideas because the
neccesary tools do not exist. There is no way that I know of to make a
smooth transition from the 4th dimension to the 3rd using mathematics.

And what does it mean anyway ?
A disk in R2 is certainly 2-dimensional. But the same disk in R3 ? Is it 2
dimensional or 3 dimensional ? I'm just not satisfied with the standard
mathematical interpretation that you can have 2 dimensional manifolds
floating around in R3. This distinction is premature.

But to answer your question - Yes it is open, and yes it is closed. Yes is
has a boundary, and yes it does not have a boundary. What's more, this is
_not_ a paradox !! Yes I believe this, and yes I cant believe my eyes.

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