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Game Theory: The Science of Decision-Making

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With up to ten years in prison at stake, will Wanda rat Fred out? Game theory is looking at human interactions through the lens of mathematics. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Kevin Bealer, Justin Lentz, Mark Terrio-Cameron, Patrick Merrithew, Accalia Elementia, Fatima Iqbal, Benny, Kyle Anderson, Mike Frayn, Tim Curwick, Will and Sonja Marple, Philippe von Bergen, Chris Peters, Kathy Philip, Patrick D. Ashmore, Thomas J., charles george, and Bader AlGhamdi. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.khanacademy.org/economics-finance-domain/microeconomics/nash-equilibrium-tutorial http://levine.sscnet.ucla.edu/general/whatis.htm http://assets.cambridge.org/97805213/61774/sample/9780521361774ws.pdf https://www.youtube.com/watch?v=qcLZMYPdpH4 http://link.springer.com/chapter/10.1007/978-1-349-20181-5_1 http://www.gametheory.net/dictionary/Game.html Image Links: https://en.wikipedia.org/wiki/John_Forbes_Nash_Jr.
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Text Comments (3384)
Bill Astell (18 hours ago)
In life decisions are rarely an "end game"  Life games are open ended.  If a person chooses to squeal that action could well come back to bite them later.  They will be known to be selfish.  In the long run it is best to be dependable and supportive of others and not one who only looks out for the self.
Edd Grs (1 day ago)
So I was using Game Theory all my life, without even knowing about it. I should get the Nobel prize.
i Darkby (4 days ago)
I feel as if one need only spend a few minutes engaging with an mmo community to understand the flaws of game theory. I’ve had multiple instances as a gamer where I’ve received generosity on the basis of gesture and nothing else. Perhaps it is applicable to the fundamentals in nature. However, I believe that our humanity transcends it.
David Freibrun (4 days ago)
clickbait i thuoght it was gametheory
Metallic Plasma (5 days ago)
I made https://youtu.be/UcjkaeVMJGg a cloud chamber. 🍻
more tune (5 days ago)
But, when you play the game of thrones, you win or you die. There is no middle ground.
Ronaldo River (7 days ago)
If you want to understand Game Theory, there is a 24 lecture course by the teaching company I highly recommend it. If you think that it is too expensive amazon or ebay should do the trick.
Keith McGaffie (8 days ago)
The best choice is not to tell period what he fail to realize in his whole theory of Nash equilibrium is the moral choices one take before and after there actions. You see one may belike take a ten year stint or a life bid isn’t worth telling and will stick to that to the end and will usually be around the same type of people when it comes to doing what ever social decisions they chose to make
Romma Narayan (9 days ago)
This Sci Idiot spits complete Selfishness and talk about theft..
Sarath Chandra (9 days ago)
Well explained thank you
Ahmed Sajad (9 days ago)
but can this beat a chess game with a computer though
Quadro (10 days ago)
Capitalism at its finest.
Bryan Smith (10 days ago)
The Wanda/Fred prisoners' dilemma doesn't work in the real world. Among criminals, rats are hated. If one of them confesses, they're risking violence against them from a 3rd party.
Kreuzritter Gottes (10 days ago)
fk the cooperateive one lol.
Abhik Sarkar (11 days ago)
Suddenly Socialism is making sense now
Paul D (11 days ago)
Great intro in to game theory. I'll do further research
TheFrozenFire (11 days ago)
Michael Scofield explained
Semble Eurico (12 days ago)
The amount of times this channle wedges climate change propaganda into it's episodes is disgusting.
John Johansen (13 days ago)
Sadly! I had to see this episode twice, to really get it! I'm getting old. 😭
MarcusGarvey (14 days ago)
Warning: read actual books, journals and original works on game theory to understand it. While doing so use some critical thinking and interact with whatever the author is saying. Real knowledge isn't cheap. Don't just come here online looking for someone to do the reading on your behalf and make quick and easy videos for you. You will end up feeding on someone else's opinions/interpretation of facts and will go out regurgitating them. Do the hard work,  go back to sources ( ad fontes) , even if it's difficult keep reading, questioning and interacting. That's how you really get educated. Otherwise, you become a mindless automaton for some fast-talking, glass wearing professor-wannabe guy.🖖🏾
Kent Raquet (14 days ago)
Wow, thank you for the comment at the beginning of the prisoners dilemma calling it a competitive game. This so precisely explains why i disagree with the standard solution. I play it as a cooperative game. The year totals used are almost always so extreme, that it would be foolish not to cooperate with your partner.
Sanya Sri (15 days ago)
Thanks! I was searching for this for a long time. It was very nice
mkaberli (15 days ago)
A coalition of politicians deciding how to solve climate change is not Gabe theory. Instead it’s an exercise in stupidity, futility and self aggrandizement.
William Davis (16 days ago)
Game theorists lost interest in cooperative game theory decades ago. It is a waste of breath to spend so much time on the Shapley Value. So dull, this is a bad introduction likely to turn people off to what is really a much more interesting topic than represented here. If there is one thing to be right about in an introduction to game theory it is the definition of a Nash Equilibrium. An NE requires that all players are optimally best responding simultaneously. It does not consider what the optimal play is “no matter what the other player does.” Fail, thumbs down.
Jeffrey Joe Pe-Aguirre (17 days ago)
This video has too many inaccuracies.The origins of game theory is traced back to John von Neumann and Oskar Morgenstern, not John Nash.
joshua barrientos (18 days ago)
The "Shapley value" and Cost volume profit" has the same concept, the only difference is the averaging to determine each share in the former.
Nuno Afonso (18 days ago)
This is wrong. The Nash equilibrium is reached with none of them confess.
HackMacAttack (18 days ago)
But hey, that’s just a theory.
Jazzvids (5 days ago)
+Anti-Arrowhead I think it's a sufficient source for common articles, since so many people are monitoring them. Decentralizing the source of knowledge is a good thing
Moondust2365 (5 days ago)
+Anti-Arrowhead True. They're skeptic about Wikipedia, but not other websites...
Anti-Arrowhead (13 days ago)
+Jazzvids Your teachers would be devastated if they learned that you quoted Wikipedia.
Jazzvids (13 days ago)
"The meaning of the term scientific theory (often contracted to theory for brevity) as used in the disciplines of science is significantly different from the common vernacular usage of theory.[4][Note 1] In everyday speech, theory can imply an explanation that represents an unsubstantiated and speculative guess,[4] whereas in science it describes an explanation that has been tested and widely accepted as valid. These different usages are comparable to the opposing usages of prediction in science versus common speech, where it denotes a mere hope." -wikipedia
1cin9z (18 days ago)
Oof thought this was posted by game theory😂😂😂
Tejus Wadbudhe (19 days ago)
Thank you
Robert Leva (19 days ago)
Save your own personal political views for another video and keep it strictly facts (example: your BS during number 3, we dont care about your opinion). Unless you want to alienate people...
exwhyz33 (20 days ago)
It's Maths from Mathematics with a 's', not Math. Ok, so on with Game Theory.
Lightest Asian (20 days ago)
Just have faith in jesus dont think too much losers
Rowen Halihandra (20 days ago)
I'm lost
Umar Niazi (21 days ago)
Not pioneered by John Nash. The pioneers were John von Neumann and Oskar Morgenstern.
Robert Schlesinger (22 days ago)
Excellent video on the basics of Game Theory. My 17 year old learned a lot from it. It may also be worth mentioning that Game Theory is put to good use by economists, military strategists, and policy strategists. Differential Games are more difficult to axiomatixe and compute, but often more accurately reflect real world situations. Military strategists generally use Differential Game Theory, as situations are often continuously changing.
Anonymous ## (22 days ago)
I came here thinking that he will explain the decision making in chess lol.. misleading thumbnail
Solidarity is never on the table. Nice capitalist way of thinking.
Priya Joshi (23 days ago)
Beautifully Explained!
David Belcher (23 days ago)
Climate change is very easy to solve. Close your eyes....now open them..... congrats, problem solved!!!
Enlightened Negritude (24 days ago)
Who sets up the experiment?
Kev the Rev (25 days ago)
Whats wrong with his hips? Is he wearing a DIAPER?
#DittoPardo (25 days ago)
kiruthika vasanth (25 days ago)
Scishow psych
WhatWhereWhenWhyHowCan (27 days ago)
0:50 no, no I didn’t
daniel (28 days ago)
It seems to me that America's CEOs are not applying the rules of Game Theory equitably. In 1980, the average CEO's salary was 42 times that of the average worker. However, that number currently stands at about 350. I highly doubt that the average CEO marginal contribution increased by over 800% in 40 years. Wake up, people ...
Alexander p (29 days ago)
Don't blame the player, I'm just playing the game of life
John Constable (29 days ago)
why wanda and fred are white? you racist
See the Light (30 days ago)
Don't buy the cookies. If you make 10, your friend makes 20, together you make 40 and earn $40, then your friend's production is 2x yours (20/10) and should receive 2x as much. so payouts should be $13.33 for your and $26.66 for him and forget the penny.
low battery (13 days ago)
$5 each
Greetings, for clarification, what does one divide the ten-dollars equally to? ~Ice~
low battery (15 days ago)
That's not how it works. You get $10 for your 10 cookies and your friend gets $20 for his 20 cookies. Then you divide the remaining $10 equally. So you finally get $15 and your friend gets $25. That simple.
Grayson M (16 days ago)
That's how most people would split it anyway.
Suhaila Naz (1 month ago)
Loved this video. Videos like these have made me change the way i used to think about of Maths!
Tristan Hurley (1 month ago)
Confess to what?
Marko 1 (1 month ago)
Seriously ? mmm...
Pretty Prez (1 month ago)
It took a white point Dexter to explain the concept of snitching. Broke it down to a science
ju4jr 7 (1 month ago)
Seriously ? mmm...
hu4jr 6 (1 month ago)
Seriously ? mmm...
bu4jr 1 (1 month ago)
Seriously ? mmm...
gongo6l 5 (1 month ago)
Seriously ? mmm...
Ca6opans 2 (1 month ago)
Seriously ? mmm...
Julia M. Deso (1 month ago)
Seriously ? mmm...
Anne R. Smith (1 month ago)
Seriously ? mmm...
O Shani (1 month ago)
Akash Rajkishore (1 month ago)
This is just common sense. You don’t need a science to understand it.
Alparslan seans (1 month ago)
My biggest mistake that i choose this as a elective course i struggle a lot
egai 3 (1 month ago)
Seriously ? mmm...
Ira One (1 month ago)
Seriously ? mmm...
gus arifin (1 month ago)
Seriously ? mmm...
Milan3 (1 month ago)
Seriously ? mmm...
David Borger (1 month ago)
Why is there a chess game in the thumbnail?
yogesh chavan (1 month ago)
There is no axiam
Condu5ipt 2 (1 month ago)
Seriously ? mmm...
Gint4Gil 4 (1 month ago)
Seriously ? mmm...
Dint4Gil 2 (1 month ago)
Seriously ? mmm...
Bint4Gil 1 (1 month ago)
Seriously ? mmm...
Lakr4wals 8 (1 month ago)
Seriously ? mmm...
Gakr4wals 4 (1 month ago)
Seriously ? mmm...
Jata5wilh 7 (1 month ago)
Seriously ? mmm...
Gata5wilh 4 (1 month ago)
Seriously ? mmm...
Fata5wilh 3 (1 month ago)
Seriously ? mmm...
william castrol (1 month ago)
Any book on game theory
Rajfa Krsteva III (1 month ago)
Seriously ? mmm...
Evelina Kananović II (1 month ago)
Seriously ? mmm...
Alvina Smodila VIII (1 month ago)
Seriously ? mmm...
Blanka Milić III (1 month ago)
Seriously ? mmm...
Raff Sadega (1 month ago)
Seriously ? mmm...
Izaket Vedzizhev IV (1 month ago)
Seriously ? mmm...
Lagu Enak (1 month ago)
Seriously ? mmm...
Melissa Garay 1 (1 month ago)
Seriously ? mmm...
Dark On Me (1 month ago)
99% who play chess are looners
agi 2 (1 month ago)
Seriously ? mmm...
Lohith Emplay (1 month ago)
Thanks for mentioning about the movie
雪人Snowman (1 month ago)
Gr8 video my head hurts
Aaron Thomas (1 month ago)
What if when cooperating one of the parties has more skills or capacity to promote that synergy? You shouldn’t just average in that case.
tereliyee1 (1 month ago)
Seriously ? mmm...
Onat Korucu (1 month ago)
Why, in the second example are not we dividing according to the ratios of our self-baked cookies. for instance I get 40/3 while my friend gets 40.2/3. So I get 13.33 and My friend gets 26.67. Is not this more fair?
risa 5 (1 month ago)
Seriously ? mmm...
Bram sechs (1 month ago)
Seriously ? mmm...
Andinie 6 (1 month ago)
Seriously ? mmm...
Viona6 (1 month ago)
Seriously ? mmm...
Naung Naung (1 month ago)
you speak very fast. Difficult to listen for non-native speakers.

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