That is the standard definition of infinity and by it, some infinities are contained within others. — Isaac
One way to view it is to say that galaxies are staying still while there is some underlying space expanding, but no entity called "space" has ever been observed expanding or stretching, when we say space expands we're saying nothing more than galaxies move away from each other at a rate proportional to the distance between them, which doesn't require an expanding space to describe. — leo
There clearly only one such possible number — Devans99
What we humans consider the universe may be expanding...but "what we humans consider the universe" may be but nothing within an INFINITE universe. — Frank Apisa
— Devans99
Devans99
1.1k
↪Isaac
I've spent years studying infinity and my conclusion is that the mathematical community have it wrong.
Its a belief called Finitism:
https://en.wikipedia.org/wiki/Finitism
Used to be more popular than it is nowadays but there are still a few proponents (Max Tegmark, William Craig Lane) for it around.
You should have respect for and consider other peoples viewpoints; not dismiss them blindly.
You should realise it is a fact that not everything you we — Devans99
What we humans consider the universe may be expanding...but "what we humans consider the universe" may be but nothing within an INFINITE universe. — Frank Apisa
Good point. If our universe is expanding and our universe is contained in the larger universe, that means the larger universe must be expanding too hence it can't be infinite either. — Devans99
There may be no expanding...just the illusion of expanding — Frank Apisa
But the metric is expanding. So we can equate the metric to space without having to resort to a believe in spacetime. And if the metric is expanding, the metric, IE space, cannot be infinite. — Devans99
Well you can imagine a finite part of the universe and visualize the metric expanding in that part, and imagine that the same goes on in every part of an universe that goes on forever. — leo
Then some might say "our mind is not able to grasp it all at once but that's only a limit of our mind", while others might say "something that cannot be conceived as a whole doesn't exist or is impossible". — leo
Devans99
1.1k
There may be no expanding...just the illusion of expanding — Frank Apisa
What then is your explanation for the redshift of distant galaxies? — Devans99
hachit
145
↪Devans99
you made classic error. Space can ether be the area or the matter. You have use the word space without defining wich one. You argument is true when applied to matter because it is the matter what we mean when we say it is expanding, and I believe matter cannot be infinite. However when applied to the area no longer applys. — hachit
Well you can imagine a finite part of the universe and visualize the metric expanding in that part, and imagine that the same goes on in every part of an universe that goes on forever. — leo
If it goes on forever, there is no room for any expansion; there is nowhere to expand to.
Then some might say "our mind is not able to grasp it all at once but that's only a limit of our mind", while others might say "something that cannot be conceived as a whole doesn't exist or is impossible". — leo
I'm of the 2nd believe. That head spinning feeling when we think of infinity is our minds choking on a very illogical concept I think. — Devans99
can't be both expanding and infinite
YOU BLINDLY GUESS THAT MATTER CANNOT BE INFINITE.
If it goes on forever, there is no room for any expansion; there is nowhere to expand to. — Devans99
I'm of the 2nd believe. That head spinning feeling when we think of infinity is our minds choking on a very illogical concept I think. — Devans99
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