Horizon - To infinity and Beyond part 1 of 6

By our third year, most of us will have learned to count. Once we know how, it seems as if there would be nothing to stop us counting forever. But, while infinity might seem like a perfectly innocent idea, keep counting and you enter a paradoxical world where nothing is as it seems.

Mathematicians have discovered there are infinitely many infinities, each one infinitely bigger than the last. And if the universe goes on forever, the consequences are even more bizarre. In an infinite universe, there are infinitely many copies of the Earth and infinitely many copies of you. Older than time, bigger than the universe and stranger than fiction. This is the story of infinity.
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[Xavicat14]

I would never have imagined that a hundred zeros would be higher than the number of atoms in the observable universe.

[DarkAngelSupreme]

This is probably the best episode of Horizon I've ever watched.

[EvilTwinkie15]

I swear one of those mathematicians is nicholas cage

[starofcctv94]

@Xavicat14 You've got to remember that everytime you add a zero you times it by ten. Try thinking about 1cm then 10cm then 1m then 10m, 100m, 1km and so on and you will start to see why its so big.

[LuxuryBarrage]

@KLiNKiN07 I'm one of the forty.

[mindinflow]

@liilaalee Maybe it really is 60 procent maybe its even more.

But when you throw some percentages on the reactions with out any argument or prove that this percentage is reall.

Why should i believe this then ???

[mindinflow]

@liilaalee It looks like i will need to explain why i sayd this.

To make something a fact rather than a simple speculation you will need to prove the total percentage.

If can not prove the total percentage than this percantage will become only a percentage.

So when i say 70 procent of the worlds population is a violent murderer.

Or only 1 procent of the worlds population is starving from hunger.

This wont make it a FACT its a percentage build from a speculation.

[lesnikow]

great video!! but does the host need to be so sinister??

[EmRaH4Oo]

What is the name of the first soundtrack?

[jugglia]

These mathematicians are getting their numbers mixed up. The pool ball analogy only works if you suppose there is a boundary to space,and that particles occupy finite spaces. If there is no boundary to space then particles can be infinitely far away from each other, or if particles can be moved an infinitely small distance then no two universes need ever be the same. If you were to destroy this supposed exact copy of our universe, how many universes would there be left? It's still infinite.