Lets talk about my favorite subject....

[Spirit]

When people quit using numbers, they will end. When there are no more humans left, humans can no longer be stupid.

All those people that believe in the big bang theory should know that everything is always changing. Nothing stays the same, therefore nothing can be infinite.

[Andromeda]

When people quit using numbers, they will end. When there are no more humans left, humans can no longer be stupid.

All those people that believe in the big bang theory should know that everything is always changing. Nothing stays the same, therefore nothing can be infinite.

This reminds me too well of the Large Hadron Collider

[wompastompa]

When people quit using numbers, they will end. When there are no more humans left, humans can no longer be stupid.

All those people that believe in the big bang theory should know that everything is always changing. Nothing stays the same, therefore nothing can be infinite.

firstly, when time stops, nothing changes, proving that not everything is changing

I have to say your wrong, of course a lot of infinity is conceptual,make that all of it, but it doesn't mean it doesn't exist. The definition of a concept:a general notion or idea.

I dont mean to create an argument but I'll do it anyway(I'll try to refrain from involving the big bang since I've become irritated of seeing those heated arguments)

Before newton, gravity didn't exist. Just because it cant be proven yet, doesn't mean it doesnt exits(repetition is a good way to persuade people)

[Luna]

firstly, when time stops, nothing changes, proving that not everything is changing
I have to say your wrong, of course a lot of infinity is conceptual,make that all of it, but it doesn't mean it doesn't exist. The definition of a concept:a general notion or idea.

I dont mean to create an argument but I'll do it anyway(I'll try to refrain from involving the big bang since I've become irritated of seeing those heated arguments)

Before newton, gravity didn't exist. Just because it cant be proven yet, doesn't mean it doesnt exits(repetition is a good way to persuade people)

How are you sure that when time stops, nothing changes? You have no solid proof of that. No human has experienced a "time-stopping" scenario. Even if they did, they wouldn't know, for all we know, time could be going on and off right now, and we don't even realise it.

[wompastompa]

Someone wanted a definition of infinity!

well lets give it to them, heres what I found:

1.unlimited or unmeasurable in extent of space, duration of time, etc.: the infinite nature of outer space

2.immeasurably great: an infinite capacity for forgiveness
(first two are linguistic definitions from Dictionary.com)

Ill get back to you on the scientific definitions, here are some usefull websites to back your own opinions:

http://www.cs.princeton.edu/~kazad/r...y/infinity.htm

http://www.sciam.com/article.cfm?id=...ifferent-sizes

http://www.asa3.org/asa/PSCF/1993/PSCF3-93Hedman.html

http://scidiv.bcc.ctc.edu/math/Infinity.html

I had to look at a lot more sites to grasp the idea, because most of these sites are above my comprehension

This ones for Luna

your absolutely right, but that doesnt necessarily disprove it does it!!!

(short and sweet, you gotta love it)

Just something I wanted to get out.....can you guys please stay as close to the topic as possible, and can someone contribute to my understanding of infinity and not just challenge the idea(I really like to debate the subject but I originally posted this thread to learn something)

[Spirit]

First do not triple post, use the edit button.

Second, you say I am wrong, but yet you go on in other posts to say

firstly, when time stops, nothing changes, proving that not everything is changing

So Luna asks you how do you know? and provides you with a good theory.

And your reply to her is,

your absolutely right, but that doesnt necessarily disprove it does it!!!

So you contradict yourself. How can you say I am werong, when I say that everything changes constantly, yet you cannnot prove that it does not?

[Ralath]

Ill get back to you on the scientific definitions, here are some usefull websites to back your own opinions:

If you can't give me a scientific definition, how can you say:

your right and wrong, because numbers can be accumulated an infinite number of times, your statement has some truth, but if you replace infinite in your sentence(if you can call it that)
with the actual scientific definition, it would make absolutely no since(also there is a difference between scientific and linguistic definitions)

I think you need to be actually able to say what the actual scientific definition is before you can judge whether something makes sense or not.

Just something I wanted to get out.....can you guys please stay as close to the topic as possible, and can someone contribute to my understanding of infinity and not just challenge the idea(I really like to debate the subject but I originally posted this thread to learn something)

What did you want to learn? You didn't post a question anywhere. You just said you wanted to talk about infinity and that's what we're doing. We're having a lively debate about infinity...

[lamchopz]

I think we should call this thread "LHC reloaded". xD

It was mentioned that the universe is expanding at an infinite rate. That is not what we currently believe. However, as of now, we're still unsure of the exact value. Observations suggest that the universe is expanding and this is how we came up with the expanding/contracting universe theory.

Latest progress on this matter is reported here.

As for infinity, it is essentially a creature that no one knows about. We necessitated the need for it because, like Ralath said, there are instances where we have to allow for it, like the set of numbers, for example. If we define a natural number such that there exists another natural number that is 1 more than it, then there has to be an infinite number of natural numbers, simply by using induction.

[Luna]

^ Oh so Infinity went from a theory, to a concept, to a creature? xD! Next it will be a plant <3

And thanks Spirit, I did think he was contradicting himself <3

@Hessah- You prove a good point, but to our current knowledge, rocks didn't come around until earth cooled from its "Fireball" state.

I guess Infinity is one of those questions that everyone wants to know,
but nobody has a good answer for it: such as "Why is the sky blue?" or "Why are we the only planet with life"

Oh well -shrug-

[lamchopz]

lol, "creature" is just an expression. Don't take it literally. I like your jokes sometimes but not this time, sorry.

I don't discuss infinity because I don't know much about it (even my maths lecturer admitted no one knew exactly what it is).

I only express my views and back them up with what I've learnt only to the topics I am more or less familiar with.

So here are they, what I know for sure:

Answers to the question you posed:

- Why is the sky blue?

The answer is that droplets of water vapour in the air can separate light into its component colours with blue being the most refracted, therefore its angle of refraction is the highest which allows it to reach our eyes. Therefore, we perceive the sky as blue.

To understand this, you need to know that light gets refracted when it travels from one medium to another, and its component wavelengths (which, in the visible spectrum, are the colours you see) all are "bent" at different angles, thus they are separated.

- Why is Earth the only planet with life?

How do you know? To make the claim that only life exists here, you have to show that life can't exist elsewhere in the entire universe (and please don't use contrapositive to rebut this point. you have to stick to your first hypothesis). Consider the number of galaxies. In each galaxy, look at the number of solar systems. In each solar system, look at the number of planets. Is it so small a probability that life exists selectively and solely on this planet? That's an extreme assumption and has no backing whatsoever. If life can thrive here, there is no reason why it can't in other places.

EDIT: typos everywhere. =.=