[Andy]

Infinity is an unnatural, unphysical concept which anybody can't prove.There is no proper defination for infinity. Whatever definations are there for infinity are from humans view which is very short & limited.Try to look thro' nature's view which is very wide, you'll never find infinity. Will nature give birth to a child which even nature couldn't stop? We have met every body of nature, we have met finity,we have met some of the force we know;but have you ever met infinity?No & you'll never meet infinity, because it doesn't exists in our nature. It may exist beyond our nature or may not be existing. I can't say whether something is there beyond our nature but I can say one thing surely and that is "NATURE DOES NOT ALLOWS INFINITY."

[SinJin]

Originally Posted by Andy

Infinity is an unnatural, unphysical concept which anybody can't prove.There is no proper defination for infinity. Whatever definations are there for infinity are from humans view which is very short & limited.Try to look thro' nature's view which is very wide, you'll never find infinity. Will nature give birth to a child which even nature couldn't stop? We have met every body of nature, we have met finity,we have met some of the force we know;but have you ever met infinity?No & you'll never meet infinity, because it doesn't exists in our nature. It may exist beyond our nature or may not be existing. I can't say whether something is there beyond our nature but I can say one thing surely and that is "NATURE DOES NOT ALLOWS INFINITY."

You say "have you ever met infinity? No & you'll never meet infinity, because it doesn't exists in our nature" at the end, but at the beginning you contradict yourself by saying "Whatever definations are there for infinity are from humans view which is very short & limited". Our views are short and limited, and we know little about what is actually out there, so I don't see why you would rule out infinity so quickly, just because we don't see it in "our nature". As you say, our views are short and limited, and so infinity could possibly exist out there beyond our scope. Besides, infinities do arise in mathematics, and math is part of nature.

[Andy]

what will be beyond our scope Sinjin? I thought on it for a long time and I now agree with Guille that it will be nature only. there will not be some thing that is not nature. Because nature is everything and infinity is purely unnatural and untill now just an concept. yes, math is a part of our nature, but have you actually seen math? have you actually seen knowledge? have you seen cosmology? no, its a science. I accept that infinity do arise in math. its an concept. Einstein's concept of static universe was arised in science but it was disproven. numerically you express infinity as 1/0 . but 1/0 could be anything other than infinity.first of all we haven't got understod properly what zero is. here is what Guille thoughts about it. he sent this to me before going to Oxford:
I think that infinity doesn't have a correct definition because we haven't met with it. I don't think that infinity is beyond nature because for me nature is everything. Including the non-existing things. Relaity is what exists and does not exist, and infinity is out of reality, so not only not exist but not not exist. It is impossible to think now, what does it do then? Because we are used to think of existing and non-existing. Nature does not allow infinity, this is true. Infinity is just a wrong concept: shouldn't be used. Finally, I want to state that it is true that we can think in infinity, we can think about it because we are now discussing it you and me, because we know (or think we know) what it is supposed to be. What we CANNOT DO IS IMAGENING INFINITY. This is an impossible thing.

[Guille]

Andy,

Thanks for posting my ideas on ifninity.

I have been thinking a lot, and I have concluded that infinity MAY be studied by some of our studying branches. Preciselly, philosophy should study the possibilities of existence, but I've already dealed with that. It should explain how can we think about it, what it really is and impplies. Two important questions should be: why did the human mind came along infinity? how can infinity have no size, or ammount, but represent a quantity?

Mathematics should deal with the logical network about infinity (the idea of infinite set). Number theory should deal with the modifications that can be done on infinity (what infinities are bigger than others? WHAT INFINITY-INFINITY?...)

Science should deal with the natrural representations of infinity. But, let me explain: of course there is no natural infinite, biologists that want to count how many apples there are on earth, will have no infinite, preciselly because there should be infinite space,and earth is finite. I mean that, when QM and GR are mixed and give infinites, that is what science should fight and study.