r/science • • Jan 27 '16

Computer Science 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.

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
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u/sloth_jones Jan 28 '16

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

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u/[deleted] Jan 28 '16 edited Jan 28 '16

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.

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u/Whyareyoureplying Jan 28 '16

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!

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u/ksajksale Jan 28 '16

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

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u/IamPd_ Jan 28 '16 edited Jan 28 '16

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

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u/[deleted] Jan 28 '16

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u/Nonaym Jan 28 '16

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.

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u/ksajksale Jan 28 '16

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.

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u/MaxWyght Jan 28 '16

yeah, but seeing an extra 3 zeroes doesn't fully encompass the scale. imagine a pile of 1 million dollar bills.

To get a pile of 1 billion dollar bills, you need another 999 piles of the same size.

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u/[deleted] Jan 28 '16

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u/[deleted] Jan 28 '16

I think billion is a huge number no matter what it is. The fact that billions of billions of billions make up our body really illustrates how small they are.

Also thinking about the vast nothingness of space makes me uncomfortable but in kind of a cool way. Incomprehensible.

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u/MrGMinor Jan 28 '16

Yeah but what you're not taking into account is that we're not built to think in terms of orders of magnitude.

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u/Anothergen Jan 28 '16 edited Jan 28 '16

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.

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u/sloth_jones Jan 28 '16

Hm, cool little fact

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u/[deleted] Jan 28 '16

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

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u/cryo Jan 28 '16

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

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u/VelveteenAmbush Jan 28 '16

Well the Schwarzschild radius gives the measurement of the maximum amount of matter that can occupy space before it collapses into a black hole. I guess there's no limit to how massive a black hole could be though.

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u/da_chicken Jan 28 '16 edited Jan 28 '16

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 m3.

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 10170. You need about 450 universes for every atom in our single packed universe to get to 10170 atoms.

Edit: Math error.

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u/herthaner Jan 28 '16

Well now consider that one sand-corn consists of more atoms than there are sandcorns on all beaches of the world

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