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5
2
Finite Infinite
Debate Score:7
Arguments:6
Total Votes:9
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 Finite (4)
 
 Infinite (2)

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BurritoLunch(6566) pic



Is The Universe Finite Or Infinite?

Now, for those few of you here who don't openly reject science, I am of course aware that the background radiation of the universe has been mapped, and so your first thought might well be that of course it is therefore finite.

But hold on just a moment.

Simultaneously, the universe is in a constant state of expansion. As soon as you measure it your measurement is wrong because it gets bigger. You see what I'm saying? However big the number gets which describes the physical dimensions of the universe, it is never sufficient to actually describe the physical dimensions of the universe. Not in real time. You can only point and say, it was X big at Y point in the past.

So is that actual infinite? Or am I just twisting logic? In a 3D universe I think the answer would be a simple finite, but when you add in time the answer isn't so clear.

Thoughts?

Finite

Side Score: 5
VS.

Infinite

Side Score: 2
Amarel(5669) Banned
1 point

Infinity is an abstract concept and is, by definition, greater than any conceivable number. However big the universe is at any given future point, it will have an assignable number that represents that distance. However large that number is, we will always be able to conceive of a number that is larger.

If you change the question and ask how large the universe can expand, the answer may be that it can expand infinitely, if it never stops. This wouldn't mean that its size is ever infinite.

Side: Finite
0 points

Infinity is an abstract concept

On what basis are you drawing that conclusion?

Black holes are regions of infinite density and black holes demonstrably exist. Therefore your conclusion would appear to be wrong.

and is, by definition, greater than any conceivable number.

Yes, but that tells us nothing about why you believe it to be an abstract concept.

However big the universe is at any given future point, it will have an assignable number that represents that distance.

Yes, this had occurred to me. I agree. At least in theory.

However large that number is, we will always be able to conceive of a number that is larger.

That's because numbers themselves are infinite you bozo.

If you change the question and ask how large the universe can expand, the answer may be that it can expand infinitely

If it can expand infinitely (which the latest data suggests it can and will) then it is infinite, because remember we are also measuring across time as well as space.

Side: Infinite
Amarel(5669) Disputed Banned
1 point

Black holes are regions of infinite density and black holes demonstrably exist. Therefore your conclusion would appear to be wrong.

"A singularity is a point in space where there is a mass with infinite density."

"In the real universe, no black holes contain singularities. In general, singularities are the non-physical mathematical result of a flawed physical theory. When scientists talk about black hole singularities, they are talking about the errors that appear in our current theories and not about objects that actually exist. When scientists and non-scientists talk about singularities as if they really exist, they are simply displaying their ignorance."

https://wtamu.edu/~cbaird/sq/mobile/2013/09/13/does-every-black-hole-contain-a-singularity/

If it can expand infinitely (which the latest data suggests it can and will) then it is infinite, because remember we are also measuring across time as well as space.

An infinitely expanding universe expands unendingly. That does not mean that its existent size is infinite. The infinity refers to an endless potential, not an actuality. Infinity is not a coherent concept as an actuality (see above).

Side: Finite
Amarel(5669) Banned
0 points

Study up dummy. Singularities (like infinity) are conceptual/mathematical, not physical.

phys.org asked a professional: "Dr. Paul Matt Sutter is an astrophysicist with Ohio State University and the Astronomical Observatory of Trieste. Paul specializes in cosmic voids, he also knows plenty about both the Big Bang and black holes."

C'mon Nom, let's see what another physicist says about how you're wrong:

"So, when we're looking at singularities, it's important to keep in mind what a singularity is. A singularity is a place of infinite density, and that's not really a thing. It just means that the mathematics that we're using to describe the thing have broken down. Like we get infinities in our answers when we try to calculate what's going on. In as far as we know, these kinds of things, these breakdowns in the mathematics, happen in two places. One is at the center of a black hole, where stuff is compressed down so much that we can't follow the math anymore, and the other time is in the very early universe, when the entire universe is crunched down into such a tiny volume at such high densities that we can't follow the math any more. So that's the only thing that they have in common – that there's a singularity, which means that we can't do the math any more."

https://phys.org/news/2016-02-big-black-hole.html

Side: Infinite
1 point

Study up dummy.

I've just linked you to Stanford and then to Wikipedia you mentally unwell twat. 😆

Singularities (like infinity) are conceptual/mathematical, not physical.

Repeating the same claim I have already disproved twice is going to do absolutely nothing except convince everybody who reads your posts that you are an idiot.

Side: Finite
1 point

C'mon Nom, let's see what another physicist says about how you're wrong

He isn't saying I'm wrong at all you idiot. He agrees with me completely:-

it's important to keep in mind what a singularity is. A singularity is a place of infinite density

So he A) Admits that singularities exist in physical space, and B) Supports my claim that they are regions of infinite density!!!!

You are just so contemptibly stupid Amarel, and quite clearly do not have the faintest idea what you are talking about. As my previous reference to the Penrose-Hawking singularity theorems stipulates very clearly, singularities in physical space are a necessary consequence of general relativity. If you don't want to believe in them then that's fine, but many people (including scientists) did not believe black holes really existed either, until they were all proven wrong.

What your physicist is saying is true, but he is simply rewording the exact same concept. The reason the math breaks down when calculating singularities is because one cannot calculate math problems involving infinite. If singularities were not regions of infinite density then obviously one could calculate the density of them with math. How is that difficult to understand?

Side: Finite