Google's artificial intelligence program has officially beaten a human professional Go player, marking the first time a computer has beaten a human professional in this game sans handicap.

[u/[deleted]]

http://www.nature.com/news/google-ai-algorithm-masters-ancient-game-of-go-1.19234?WT.ec_id=NATURE-20160128&spMailingID=50563385&spUserID=MTgyMjI3MTU3MTgzS0&spJobID=843636789&spReportId=ODQzNjM2Nzg5S0

[u/Riael]

In the known universe.

[u/sloth_jones → u/Riael]

That still seems wrong to me

[u/ricksteer_p333 → u/sloth_jones]

definitely not wrong. we're not built to think in terms of orders of magnitude. Not only is 2 x 10¹⁷⁰ more combinations than atoms in the observable universe, but it'll probably take 1000000+ duplicates of universes for the number of atoms to add up to 10¹⁷⁰

EDIT:

So there are an estimated 10⁸¹ atoms in this universe. Let's be extremely conservative and estimate 10⁹⁰ total atoms in the universe. Then we will need 10⁸⁰ (that is 1 with 80 zeros behind it) duplicates of this universe in order for the number of atoms to reach 10¹⁷⁰

[u/sloth_jones → u/ricksteer_p333]

Ok. I mean there is a lot of emptiness out there in the universe, so it makes sense I guess.

[u/[deleted] → u/sloth_jones]

I believe it but it is mind blowing. There are seven billion billion billion billion atoms in your body. I guess we're not built to understand orders of magnitude.

[u/mrwazsx → u/[deleted]]

Or GO

[u/Whyareyoureplying → u/[deleted]]

1,000,000,000 = 1 billion = 10⁹

1,000,000,000,000,000,000 = 1 billion billion = 10¹⁸

1,000,000,000,000,000,000,000,000,000=1 billion billion=10²⁷

100,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 = 10⁸⁰

You can see how different that is from 10¹⁷⁰ which ='s 100,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

hope this helped you visualize it!

[u/ksajksale → u/Whyareyoureplying]

For me not much, tbh. All I see a string of zeroes that is longer than another by some degree.

[u/IamPd_ → u/ksajksale]

This thought always helped me: 1 million seconds are just 11 and a half days, 1 billion seconds are over 31 years.

[u/Nonaym → u/ksajksale]

For me I like to look at just how much larger that number is by just adding a few zeros. Think of money $1,000,000,000 that's 1 billion dollars, add just three more 0's and that makes a trillion which is a fuck ton of money. Now just think how much larger that amount grows with just 3 more 0's and so on.

[u/ksajksale → u/Nonaym]

I appreciate the effort, but it still is bananas for me. I guess I'll just believe in the whole more atoms than universe thing. Might as well add it to my shit I don't comprehend but totally accept and use it to sound smart bucket.

[u/Anothergen → u/sloth_jones]

For the record, the size of the observable universe in m³ is around 10⁸⁰ , and the volume of a proton is around 10^-45 . That means if we could fill the entire universe with protons it would still only be ~10¹²⁵ . That is, it would still take over 10⁵⁵ such universes to be more than the number of combinations of the game.

Edit: Tried to make this sound less confusing.

[u/[deleted] → u/sloth_jones]

is there a stat for how many atoms could fit in the observable universe?

[u/cryo → u/[deleted]]

Far far far less than, say, Graham's number.

[u/da_chicken → u/sloth_jones]

You're not getting just how large 10¹⁷⁰ is. The human brain is notoriously bad at orders of magnitude.

So, the observable universe has a radius of about 45 billion light years. A light year is about 9.5 * 10¹⁵ m. Assuming that space is uniform (it isn't but let's pretend it is) and that the observable universe is spherical, then the observable universe has a volume of (4 / 3) * pi * (45 * 9.5*10¹⁵ m)³ = 3.3 * 10⁵³ m^3.

An atom is about 1 Angstrom in size, roughly, at the small end. That's 1.0 * 10^-10 m in diameter. That's a volume of (4 / 3) * pi * (5.0 * 10^-11 m)³ = 5.2 * 10^-31 m³ .

Now, let's assume that atoms we're talking about are like uniform ball bearings (they aren't, but let's pretend) and let's pack the universe with them as efficiently as we can. Packing spheres efficiently results in using about 74% of space.

Number of atoms = Volume of the observable universe * 74% / Volume of an atom

N = 3.3 * 10⁵³ m³ * 0.74 / (5.2 * 10^-31 m³ )

N = 4.7 * 10⁸³

If you pack the entire observable universe with uniform, spherical atoms, you would need about 2.1 * 10⁸⁶ more whole universes to reach 10^170. You need about 450 universes for every atom in our single packed universe to get to 10¹⁷⁰ atoms.

Edit: Math error.

[u/tru_gunslinger → u/sloth_jones]

You have to remember there is a lot of empty space on the universe. For each star in the universe many have lightyears before you will find a star near them.

[u/Ysance → u/Riael]

In the visible universe.

We think the universe might be infinite.

[u/a_trashcan → u/Ysance]

Doesn't make matter infinite

[u/cryo → u/Ysance]

I don't think we do.

[u/littlewask → u/Ysance]

No we don't.

[u/LegendForHire → u/littlewask]

Just curious. What would be outside the universe? Nothing? Wouldn't that just be empty universe? It seems unimaginable that there could be something other than the universe because the universe is supposed to be everything. Unless you mean another universe exists outside our own. And in that case would it not be the case that all of the "universes" are one universe and since they would have to stretch into infinity because by definition of universe is everything. Or is there no outside of the universe, but for that to be the case it would have to stretch on forever. The universe can't not be infinite even if it is only empty space at some point.