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Horizon: To Inifinity and Beyond watch

1. (Original post by SouthernFreerider)
it makes no sense to consider what happens outside the observable universe. so surely the question of whether of the universe is infinite, doesn't actually mean anything. since there's theoretically no way of knowing right?

The observable universe is finite, obviously, so for all intensive purposes, "the universe" is finite.

I dunno, I think its silly to ask questions we have no possible way of answering. like the retarded "Brain in a vat" philsophical idea.
It's still interesting to discuss, and if history has taught mathematicians anything it should be that pursuing interesting ideas is fruitful for the subject as a whole.

Also, it's a massive statement to say that we could never would out the size of the universe.
2. (Original post by SimonM)
Also, it's a massive statement to say that we could never would out the size of the universe.
Thats a statement?
3. lol at the kids in between answeing questions
"whats the biggest number" ... "10"
4. (Original post by SouthernFreerider)
it makes no sense to consider what happens outside the observable universe. so surely the question of whether of the universe is infinite, doesn't actually mean anything. since there's theoretically no way of knowing right?

The observable universe is finite, obviously, so for all intensive purposes, "the universe" is finite.

I dunno, I think its silly to ask questions we have no possible way of answering. like the retarded "Brain in a vat" philsophical idea.
I don't think that holds. Far be it for me to venture into subjects I know little about, but it seems that it is well worth exploring such ideas. For example, perhaps in the inflationary period when the universe expanded faster than the speed of light, there were perturbations in density that caused clumping in certain regions that were observable within themselves but not to between one region and another. The evidence for this serparation and clumping may actually exist in each of the region. This is just an example-pulled-out-of-thin-air - perhaps there is a law which says that the observable universe is the only one that actually exists, but I can see no logical reason for there not to be multiple mutually unobservable regions.

PS, "intents and purposes".
5. I watched it aswell, although I don't understand much of what they're saying even though they obviously tried to simplify everything down to make a documentary I still find it hard to juggle. I like watching these programs though, always up for learning new stuff.
6. I think a lot of the documentary was just ridiculous. Especially that person who said that there is a largest number, and adding 1 to it takes you back to zero. If you're working in a Modular Field, then of course that's true - a bit like the numbers on a clock. But if we're just dealing with ordinary counting numbers, then it is not true (by the Archimedean property of the Natural Numbers).
He must have been having a laugh - I refuse to believe that he is a Professor of Mathematics, trying to seriously tell us that.

Also, the idea that "If the universe is truly infinite, then a planet which is an exact replica of yours must exist" is, I'm quite sure, utter rubbish. Sure, it's very likely to exist, but that doesn't mean it must exist.

Although for people not very familiar with Mathematics, I think the infinite hotel thing was a nice way of explaining it.
But overall - the documentary gave a very false impression of what infinity is, and what Mathematicians do. Any Mathematician watching it would have cringed!
7. Did Marcus do Sautoy do this?

phew, at least it doesn't involve him
8. (Original post by tazarooni89)
Although for people not very familiar with Mathematics, I think the infinite hotel thing was a nice way of explaining it.
I liked this and thought the professor explaining it (I forget his name) was pretty good at explaining stuff.

On a side note, I did not know you were a mathmo. ""
9. (Original post by around)
Did Marcus do Sautoy do this?

phew, at least it doesn't involve him
XD

Marcus isn't that bad...credit to him to try and convince people that maths is not the worst thing in the world.
10. (Original post by around)
Did Marcus do Sautoy do this?

phew, at least it doesn't involve him
Don't worry, he's doing another one this week...
11. (Original post by SimonM)
Don't worry, he's doing another one this week...
It looks quite interesting though.

Lets just hope Alan Davies doesn't feature.
12. (Original post by elsa_89)
I liked this and thought the professor explaining it (I forget his name) was pretty good at explaining stuff.
I agree, he did explain the concepts well, and quite accurately, without misleading viewers in the way some of the other people did.
He was definitely the best thing about the documentary, in my opinion

On a side note, I did not know you were a mathmo. ""
Yep, that's what I am! (It often surprise people to find out though, for some reason )
13. (Original post by refref)
It looks quite interesting though.

Lets just hope Alan Davies doesn't feature.
I'd much rather listen to a neurology discuss whether the brains of geniuses are different
14. It was good, but I knew about all of it before so it was kind of a waste of an hour!

And way better than those cringeingly childish physics programmes or maths programmes with marcus and that comedian dude lol

I appreciate their efforts though!
15. (Original post by tazarooni89)
I agree, he did explain the concepts well, and quite accurately, without misleading viewers in the way some of the other people did.
He was definitely the best thing about the documentary, in my opinion
Agreed.

Yep, that's what I am! (It often surprise people to find out though, for some reason )
Your perpetual presence in D&D lead me to believe you were a Philosophy/Theology student. So I am (pleasantly) surprised to discover that you are a mathmo.
16. (Original post by tazarooni89)
I think a lot of the documentary was just ridiculous. Especially that person who said that there is a largest number, and adding 1 to it takes you back to zero. If you're working in a Modular Field, then of course that's true - a bit like the numbers on a clock. But if we're just dealing with ordinary counting numbers, then it is not true (by the Archimedean property of the Natural Numbers).
He must have been having a laugh - I refuse to believe that he is a Professor of Mathematics, trying to seriously tell us that.

Also, the idea that "If the universe is truly infinite, then a planet which is an exact replica of yours must exist" is, I'm quite sure, utter rubbish. Sure, it's very likely to exist, but that doesn't mean it must exist.

Although for people not very familiar with Mathematics, I think the infinite hotel thing was a nice way of explaining it.
But overall - the documentary gave a very false impression of what infinity is, and what Mathematicians do. Any Mathematician watching it would have cringed!
i
It was weird, but it was better done then the chaos doc they did a few weeks ago whch jumped around too much for my liking.
17. I liked the Chaos one, thought this one was awful.
18. (Original post by QED)
I liked the Chaos one, thought this one was awful.
The chaos one just confused me; the only but I understood was the evoloution thing.

They look very much alike? He's a legend as far as I'm concerned, for making one of the best films ever

Horizon isn't bad. Everything on television is dumbed down unfortunately. The last Horizon documentary I enjoyed was probably the one about fusion by Prof Brian Cox. But that may have had a lot to do with the scenery and visuals. I'm a sucker. Ian Stuart makes some good ones on geology, if you're into that sort of thing. Other than that science and maths docs are in short supply-- there are soo many on nature spurred on by Attenborough and co.
20. (Original post by silent ninja)

They look very much alike? He's a legend as far as I'm concerned, for making one of the best films ever

Horizon isn't bad. Everything on television is dumbed down unfortunately. The last Horizon documentary I enjoyed was probably the one about fusion by Prof Brian Cox. But that may have had a lot to do with the scenery and visuals. I'm a sucker. Ian Stuart makes some good ones on geology, if you're into that sort of thing. Other than that science and maths docs are in short supply-- there are soo many on nature spurred on by Attenborough and co.
Whilst they are dumbed down they are still better than 99% of what is on television these days. I have not seen the fusion one; I can't seem to see many on iPlayer but I will try to find them or YouTube if you have any to recommend?

I just watched the 'How long is a piece of string?' one; was rubbish.

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