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Shared publicly -This must be how the most interesting man in the world does math. "I don't always multiply numbers by hand, but when I do, I use this trick."

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This must be how the most interesting man in the world does math. "I don't always multiply numbers by hand, but when I do, I use this trick."

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interesting

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https://youtu.be/YFkJQyDPYmY

The Hot Hand Is Real?! (Video)

This is a video of the blog post from Tuesday.

The Hot Hand Is Real?! (Video)

This is a video of the blog post from Tuesday.

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NEW video! The quadratic formula - an intuitive explanation

https://youtu.be/EBbtoFMJvFc

If you can't watch the video, here's a blog post with text and images:

http://wp.me/p6aMk-4kG

https://youtu.be/EBbtoFMJvFc

If you can't watch the video, here's a blog post with text and images:

http://wp.me/p6aMk-4kG

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More than half of adults couldn't solve this puzzle within 30 minutes.

You have 4 chains each with 3 links. You want to join them to make 1 continuous chain of 12 links. It costs 2 cents to open a link and 3 cents to close a link. What is the least it will cost to join all the 12 links together?

The cheap necklace problem - Sunday puzzle (interactive video)

https://www.youtube.com/watch?v=2viqAKjS4ZQ

Blog post with text and images (if you can't watch on YouTube)

http://mindyourdecisions.com/blog/2015/09/27/the-cheap-necklace-problem-sunday-puzzle/#.VghKc_lVhBc

You have 4 chains each with 3 links. You want to join them to make 1 continuous chain of 12 links. It costs 2 cents to open a link and 3 cents to close a link. What is the least it will cost to join all the 12 links together?

The cheap necklace problem - Sunday puzzle (interactive video)

https://www.youtube.com/watch?v=2viqAKjS4ZQ

Blog post with text and images (if you can't watch on YouTube)

http://mindyourdecisions.com/blog/2015/09/27/the-cheap-necklace-problem-sunday-puzzle/#.VghKc_lVhBc

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The Prisoners' Dilemma In The Wire – Game Theory Tuesdays

http://mindyourdecisions.com/blog/2015/09/22/the-prisoners-dilemma-in-the-wire-game-theory-tuesdays/#.VgC8Qt9VhBc

http://mindyourdecisions.com/blog/2015/09/22/the-prisoners-dilemma-in-the-wire-game-theory-tuesdays/#.VgC8Qt9VhBc

I started MindYourDecisions in 2007 and was amazed people cared about math and game theory, and this site even has been mentioned a few times in the press. I studied Economics and Mathematics at Stanford where I got straight A's. (almost). I love game theory and hope to read all the books on the ...

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This Week In Math (#11): Videos from Mathologer, TED-Ed, VSauce, Minute Physics, and Vi Hart

http://mindyourdecisions.com/blog/2015/09/18/this-week-in-math-11-videos-from-mathologer-ted-ed-vsauce-minute-physics-and-vi-hart/#.Vfxx5d9VhBd

http://mindyourdecisions.com/blog/2015/09/18/this-week-in-math-11-videos-from-mathologer-ted-ed-vsauce-minute-physics-and-vi-hart/#.Vfxx5d9VhBd

I started MindYourDecisions in 2007 and was amazed people cared about math and game theory, and this site even has been mentioned a few times in the press. I studied Economics and Mathematics at Stanford where I got straight A's. (almost). I love game theory and hope to read all the books on the ...

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Here are direct links to the videos/articles in this post:

Mathologer starts out by explaining some of the math blunders in movies. https://www.youtube.com/watch?v=zBuykQHFQ1Q

TED-Ed has a video on Pascal's triangle and its many applications. https://www.youtube.com/watch?v=XMriWTvPXHI

VSauce explains Zipf's law, which is a mysterious statistical pattern that comes up a lot. https://www.youtube.com/watch?v=fCn8zs912OE

He talks about the 80/20 rule and even uses the same paper clip experiment that I posted a year ago. Sadly he messes up the experiment, as I explain in the post. The long tail should be for the long chain. You can watch my video on the experiment: https://www.youtube.com/watch?v=F-I-BVqMiNI (he 80/20 rule explained (Pareto Principle))

MinutePhysics explains why it's impossible to tune a piano. https://www.youtube.com/watch?v=1Hqm0dYKUx4

This blog post explains the same idea: http://blogs.scientificamerican.com/roots-of-unity/the-saddest-thing-i-know-about-the-integers/

Vi Hart posted a video this week about infinite trees. https://www.youtube.com/watch?v=BEz-vGJvaik

Mathologer starts out by explaining some of the math blunders in movies. https://www.youtube.com/watch?v=zBuykQHFQ1Q

TED-Ed has a video on Pascal's triangle and its many applications. https://www.youtube.com/watch?v=XMriWTvPXHI

VSauce explains Zipf's law, which is a mysterious statistical pattern that comes up a lot. https://www.youtube.com/watch?v=fCn8zs912OE

He talks about the 80/20 rule and even uses the same paper clip experiment that I posted a year ago. Sadly he messes up the experiment, as I explain in the post. The long tail should be for the long chain. You can watch my video on the experiment: https://www.youtube.com/watch?v=F-I-BVqMiNI (he 80/20 rule explained (Pareto Principle))

MinutePhysics explains why it's impossible to tune a piano. https://www.youtube.com/watch?v=1Hqm0dYKUx4

This blog post explains the same idea: http://blogs.scientificamerican.com/roots-of-unity/the-saddest-thing-i-know-about-the-integers/

Vi Hart posted a video this week about infinite trees. https://www.youtube.com/watch?v=BEz-vGJvaik

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Crocodile Maths Problem That Stumped Scottish Students. Can You Solve It?

Video: https://youtu.be/5IwV4AMfe84

Blog post: http://wp.me/p6aMk-4lL

Video: https://youtu.be/5IwV4AMfe84

Blog post: http://wp.me/p6aMk-4lL

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The Hot Hand Is Real?! Understanding A Controversial Statistics Paper – Game Theory Tuesdays

http://mindyourdecisions.com/blog/2015/10/06/the-hot-hand-is-real-understanding-a-controversial-statistics-paper-game-theory-tuesdays/#.VhMwu_lVhBc

http://mindyourdecisions.com/blog/2015/10/06/the-hot-hand-is-real-understanding-a-controversial-statistics-paper-game-theory-tuesdays/#.VhMwu_lVhBc

I started MindYourDecisions in 2007 and was amazed people cared about math and game theory, and this site even has been mentioned a few times in the press. I studied Economics and Mathematics at Stanford where I got straight A's. (almost). I love game theory and hope to read all the books on the ...

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How many dice rolls until you get a repeat?

Video: https://www.youtube.com/watch?v=g3nYDBA5a7c

Blog: http://wp.me/p6aMk-4lb

Video: https://www.youtube.com/watch?v=g3nYDBA5a7c

Blog: http://wp.me/p6aMk-4lb

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Game Theory In The News (#24): Facebook’s ad auction, when we cheat, the doctor-patient relationship, anger as a signal, reducing sexual assualt

http://mindyourdecisions.com/blog/2015/09/29/game-theory-in-the-new-24-facebooks-ad-auction-when-we-cheat-the-doctor-patient-relationship-anger-as-a-signal-reducing-sexual-assualt/#.Vgn0OflVhBc

Wired has a nice article on Facebook's ad system that brings in billions of dollars

http://www.wired.com/2015/09/facebook-doesnt-make-much-money-couldon-purpose/

Scientific American has an article on when we cheat, and the result is consistent with a game theory prediction.

http://www.scientificamerican.com/article/people-are-more-likely-to-cheat-at-the-end/

The Washington Post warns that the doctor-patient relationship is turning into a game of trust which is bad for health outcomes.

http://www.washingtonpost.com/news/wonkblog/wp/2015/09/16/how-the-doctor-patient-relationship-has-become-a-prisoners-dilemma/

A New York Times opinion piece suggests that anger is a useful strategic move.

http://www.nytimes.com/2015/09/20/opinion/sunday/the-rationality-of-rage.html?_r=0/

And The Atlantic points out how game theory might help reduce sexual assault on college campuses.

http://www.theatlantic.com/technology/archive/2015/09/can-game-theory-prevent-rape/405607/

http://mindyourdecisions.com/blog/2015/09/29/game-theory-in-the-new-24-facebooks-ad-auction-when-we-cheat-the-doctor-patient-relationship-anger-as-a-signal-reducing-sexual-assualt/#.Vgn0OflVhBc

Wired has a nice article on Facebook's ad system that brings in billions of dollars

http://www.wired.com/2015/09/facebook-doesnt-make-much-money-couldon-purpose/

Scientific American has an article on when we cheat, and the result is consistent with a game theory prediction.

http://www.scientificamerican.com/article/people-are-more-likely-to-cheat-at-the-end/

The Washington Post warns that the doctor-patient relationship is turning into a game of trust which is bad for health outcomes.

http://www.washingtonpost.com/news/wonkblog/wp/2015/09/16/how-the-doctor-patient-relationship-has-become-a-prisoners-dilemma/

A New York Times opinion piece suggests that anger is a useful strategic move.

http://www.nytimes.com/2015/09/20/opinion/sunday/the-rationality-of-rage.html?_r=0/

And The Atlantic points out how game theory might help reduce sexual assault on college campuses.

http://www.theatlantic.com/technology/archive/2015/09/can-game-theory-prevent-rape/405607/

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This Week in Math (#12): Dad writes mock check in Common Core math, Illuminati confirmed, Noether’s Theorem, and more

http://mindyourdecisions.com/blog/2015/09/25/this-week-in-math-12-dad-writes-mock-check-in-common-core-math-illuminati-confirmed-noethers-theorem-and-more/#.VgWrE_lVhBc

Here are the stories I discuss/share in the post

Dad writes mock check in Common Core math

http://video.foxnews.com/v/4502921737001/dad-writes-mock-check-in-common-core-math/?playlist_id=930909787001#sp=show-clips

Math is Illuminati Confirmed

https://www.youtube.com/watch?v=DfnBW6HvNwM

The most beautiful idea in physics - Noether's Theorem

https://www.youtube.com/watch?v=CxlHLqJ9I0A

You can make any shape with straight edges by folding a paper and making just 1 cut

https://www.youtube.com/watch?v=ZREp1mAPKTM

How to relate unsolved math problems to concepts taught in grade school

https://liorpachter.wordpress.com/2015/09/20/unsolved-problems-with-the-common-core/

It's possible Moulay Ismael the Bloodthirsty fathered 888 children - mathematically proven (Ig Nobel winner)

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0085292

Artificial intelligence can solve many SAT Math problems

http://www.popularmechanics.com/technology/robots/a17424/ai-sat-math-test/

http://mindyourdecisions.com/blog/2015/09/25/this-week-in-math-12-dad-writes-mock-check-in-common-core-math-illuminati-confirmed-noethers-theorem-and-more/#.VgWrE_lVhBc

Here are the stories I discuss/share in the post

Dad writes mock check in Common Core math

http://video.foxnews.com/v/4502921737001/dad-writes-mock-check-in-common-core-math/?playlist_id=930909787001#sp=show-clips

Math is Illuminati Confirmed

https://www.youtube.com/watch?v=DfnBW6HvNwM

The most beautiful idea in physics - Noether's Theorem

https://www.youtube.com/watch?v=CxlHLqJ9I0A

You can make any shape with straight edges by folding a paper and making just 1 cut

https://www.youtube.com/watch?v=ZREp1mAPKTM

How to relate unsolved math problems to concepts taught in grade school

https://liorpachter.wordpress.com/2015/09/20/unsolved-problems-with-the-common-core/

It's possible Moulay Ismael the Bloodthirsty fathered 888 children - mathematically proven (Ig Nobel winner)

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0085292

Artificial intelligence can solve many SAT Math problems

http://www.popularmechanics.com/technology/robots/a17424/ai-sat-math-test/

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Viral Math Problem from Google: Can you make 10 from the numbers 1, 1, 5, and 8?

Use each number once and the operations + – × ÷ ().

Video answer:

https://youtu.be/ukUkVaOyI0o

Blog post answer + how I checked all possibilities:

http://mindyourdecisions.com/blog/2015/09/20/viral-math-problem-from-google-can-you-make-10-from-the-numbers-1-1-5-and-8/#.Vf8ReN9VhBc

Spreadsheet with list of all possibilities:

https://docs.google.com/spreadsheets/d/1ijZi0xyF2Agcn9qr2NcWyqdP4dsctg7mbh1wLwMNADU/edit?pli=1#gid=1534794298

Use each number once and the operations + – × ÷ ().

Video answer:

https://youtu.be/ukUkVaOyI0o

Blog post answer + how I checked all possibilities:

http://mindyourdecisions.com/blog/2015/09/20/viral-math-problem-from-google-can-you-make-10-from-the-numbers-1-1-5-and-8/#.Vf8ReN9VhBc

Spreadsheet with list of all possibilities:

https://docs.google.com/spreadsheets/d/1ijZi0xyF2Agcn9qr2NcWyqdP4dsctg7mbh1wLwMNADU/edit?pli=1#gid=1534794298

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