How Not to Be Wrong: The Power of Mathematical Thinking - with Jordan Ellenberg

2015 ж. 23 Мау.
769 421 Рет қаралды

The maths we learn in school can seem like a dull set of rules, laid down by the ancients and not to be questioned. Jordan Ellenberg shows how wrong this view is through stories that show the power of mathematical thinking.
Buy Jordan's book "How Not to Be Wrong: The Hidden Maths of Everyday Life" - geni.us/aBdKqAq
Subscribe for regular science videos: bit.ly/RiSubscRibe
Maths touches everything we do, allowing us to see the hidden structures beneath the messy and chaotic surface of our daily lives. Maths is the science of not being wrong, worked out through centuries of hard work and argument.
Jordan Ellenberg is a professor of Mathematics at University of Wisconsin, and the 'Do the Math' columnist at Slate. His book 'How not to be wrong: The hidden mathematics of everyday life' was be published in June 2015.
The Ri is on Twitter: / ri_science
and Facebook: / royalinstitution
and Tumblr: / ri-science
Our editorial policy: www.rigb.org/home/editorial-po...
Subscribe for the latest science videos: bit.ly/RiNewsletter

Пікірлер
  • Am i the only one that finds Jordan's enthusiasm while explaining this pretty contagious ?

    @tuga2112@tuga21124 жыл бұрын
    • Nope, we agree.

      @TheRoyalInstitution@TheRoyalInstitution4 жыл бұрын
    • His enthusiasm is kinda comedic. I feel like he may be good at telling jokes. His enthusiasm makes you want to participate. I randomly found this vid but i watched the whole thing just because his enthusiasm got me excited.

      @rainmaker704@rainmaker7044 жыл бұрын
    • Yeah, it's catchier than the cororavirus

      @appleslover@appleslover4 жыл бұрын
    • SAME!

      @ancientswordrage@ancientswordrage3 жыл бұрын
    • A tip: watch series on flixzone. Been using it for watching loads of movies during the lockdown.

      @nashkairo4863@nashkairo48633 жыл бұрын
  • The essence of Projective geometry in 2 minutes (38:39). Excellent

    @BlueSoulTiger@BlueSoulTiger4 жыл бұрын
  • I'm reading his book as we speak - amazing book, I feel my confidence drops realizing people are so smart, but I enjoy it nevertheless. And as simple as it is, it took me a while to grasp about the armor bullet plane analogy. I realized it's in the language, or my lack of English understanding thereof. Prof. Ellenberg said quoting Wald: "You have to put the armor where the bullet is not". I spin my head around it. I understand, but not that fully understand like Aha! So after a while I rephrase: You have to put the armor at it's (the plane) weakest, and it could be: easy to target / the biggest / the most exposed / the most vulnerable area. Bingo! Make sense to me! Where do the police put the bulletproof vest; on the body! Why not head, easily - well not that easy - targeted and exposed too, because head is smaller and you need precision. Anyway, I continue reading. This is for my note only😅

    @afihaileywibowo1095@afihaileywibowo10952 ай бұрын
  • One of my professors got me to read this book and talked about it for the semester each week.

    @mathgasm8484@mathgasm84843 жыл бұрын
  • "Hmm, these stories sound familiar, don't I have a book with these?" Turns out I got this guy's book.

    @hughjazz4936@hughjazz49364 жыл бұрын
    • Can you tell me what is thid video s said?

      @goldbeer9185@goldbeer91854 жыл бұрын
    • 😂😂😂

      @adamkaidunnaustralia5158@adamkaidunnaustralia51584 жыл бұрын
    • @@adamkaidunnaustralia5158 ccc, zbn . N .. .

      @elisabetsinaga8746@elisabetsinaga87462 жыл бұрын
  • He made his explanation of why/how he chose his numbers much more complicated than it really had to be. His picks were simply the set of all 3 digit combinations that include a unique pair of 2 numbers. You will see that no combination will include the same 2 numbers (i.e you wouldn't use 1,2,3 and 2,3,4). There are 7 possible combinations which is why he said to select 7 tickets. Since you only need 2 number correct in order to win, you always win. So I would imagine that the MIT students did the same thing but scaled up and that the number of possible combinations using this method matched the number of tickets the MIT group was purchasing.

    @demerex6510@demerex65105 жыл бұрын
    • Thank you. Yes. As a computer scientist his explanation infuriates me. As you generate tickets, all you need to do is track how many times you've used each number, and pick the ones that you've used the least so far. The non-Euclidean space with line intersections is interesting, but totally misses the point.

      @agcwall@agcwall5 жыл бұрын
    • I was thinking exactly the same. But I am still a beginner so I don't know.

      @deeXaeed@deeXaeed4 жыл бұрын
    • Well. I think the " projective geometry" behind the number picking was just a gimmick to make the lecture more interesting. Maybe to make him look more intelligent. Or a marketing strategy to sell more books. You know how it goes. When people see something which seems smart and they can kind of understand they buy it. I could not find any substance in his lecture other than cheap curiosities.

      @abrahamlincoln9055@abrahamlincoln90554 жыл бұрын
    • And like he said,Mit guys played lottery that had better value than cost/ticket. So in his example-lottery the main prize should have been 7$ and deuce 3$. And thats how you win.

      @marko8584@marko85844 жыл бұрын
    • demerex thank you that is very well explained much appreciated. I tutor physics and math but statistics was nver my thing...drove me nuts actually

      @peterkay7458@peterkay74584 жыл бұрын
  • I read the story about James Harvey from MIT and his Random Hall strategy and Mohan Srivastava who cracked the tic tac toe scratch off lottery are My favorites.

    @juanamador2965@juanamador29654 жыл бұрын
  • I not a math genius but I enjoy it. Listening to this man I get the feeling he wants to dazzel with his brilliance rather than explain what he is doing.

    @JumboJimbo100@JumboJimbo1004 жыл бұрын
  • I'm reading it's book and he's got great wit and humor. This all becomes apparent within the first few pages. Further, he's taught me so much about mathematics.

    @doodelay@doodelay7 жыл бұрын
    • Which indicates that you knew absolutely nothing about math. If I were you I wouldnt admit to what you admitted to.

      @ThunderAppeal@ThunderAppeal5 жыл бұрын
    • @@ThunderAppeal He also wrote "I'm reading it's book" and there are two errors in the word IT'S: one semantic (should be HIS or HER) and one grammatical: (ITS, if Jordan is neuter).

      @ReasonableForseeability@ReasonableForseeability4 жыл бұрын
  • I'm really surprised to see negativity in the comments, because I spent this whole talk thinking wow this guy has a really engaging presentation style.

    @happy_labs@happy_labs7 жыл бұрын
    • I got very annoyed by him yelling at me for no reason. He has a microphone, he doesn't need to yell like he does. It just makes his voice very annoying to me.

      @Friek555@Friek5556 жыл бұрын
    • I like his presentation style. He sounds like he's going to burst out in laughter any time.

      @MartinJohnZ@MartinJohnZ5 жыл бұрын
    • The umm, Right?, OK? are his stalling tricks so his fast speaking doesn’t slow when he has to arrange his next sentence in his mind. Training could help him with all this. Math easily flows through his mind. Slowing it to verbalize is painful to ‘watch’.

      @gkess7106@gkess71065 жыл бұрын
    • I am not surprised at the undeserved negativity. It's obvious some people get a thrill out of finding fault. It's everywhere on the internet in response to virtually everything. Some people are only here for these opportunities, and the more expert the speaker or writer, the more rewarding this is for anonymous people who probably lack more positive ways to stroke their own egos. In no way is this meant to object to constructive criticism that is clearly intended to be helpful. For an example of that, see the remark by Oliv Trees above. In any case, I found Dr. Ellenberg's manner of speaking quite engaging and the subject matter much more entertaining than I expected, as a person who is generally rather maths aversive and frequently annoyed by the speech patterns of certain speakers. I'll bet the courses he teaches fill up fast. When mentally stable people encounter something they don't like on this massive smorgasbord they immediately leave in search of something else. They don't hang around to poke jabs.

      @mooster47@mooster474 жыл бұрын
    • He is annoyingly screeching and shrieking a lot. If he would speak a little calmer the talk would be much more enjoyable.

      @rudyNok@rudyNok4 жыл бұрын
  • Fascinating! Great lecture - thank you for uploading.

    @ddiehl5664@ddiehl56645 жыл бұрын
  • What's with all the comments about his "umms" in his talk? He's an established mathematician and a professor contributing to education. He doesn't have to give this talk, he didn't have to share his research and findings about this - he already wrote a whole book. All these "umms" means that he isn't great at giving talks, but he did. Perhaps, the next time you see him, he'll be giving great talks, and he'll still be a great mathematician. We all have to start somewhere. Give the guy a break.

    @thsscapi@thsscapi7 жыл бұрын
    • Very naive observation at best. One CAN judge a good mathematician from the way he speaks.

      @inveritategloria@inveritategloria6 жыл бұрын
    • Really great talk he's giving. But he really does need a voice coach. It's not the umms that are a problem really, it's the lack of support in his voice which is caused by shallow breath. It makes him gasp a little for air while he's speaking, makes his voice thinner and makes it more difficult for the audience to listen. If he doesn't address the problem- seeing as how he uses his projective voice daily as a teacher- he can eaily get vocal and throat problems many years down the road.

      @olivtrees8749@olivtrees87496 жыл бұрын
    • In Veritate Gloria - I agree that listening to someone speak about a subject says a lot about their mastery of the material. However, most people cannot retain their train of thought as well in front of an audience. For instance, I know Chemistry very well and can talk with anyone one-on-one for hours about it, but get me in front of 30 - 100 people and I get too self conscious and stop thinking as clearly as I need to to carry the talk forward. So, similar to the last statements made by thsscapi, one must work to get better at thinking clearly in front of an audience.

      @conradlewis516@conradlewis5166 жыл бұрын
    • All these "umms" is actually a sign of quality. He doesn't need to prepare a speech and memorize is it to tell the audience about his points, he knows his topic by heart and can instantaneously compose a talk right in front of where he stands. It's like a musicican giving you a live concert instead of playing a tape.It's like a chef preparing your food right in front of you instead of getting it out the fridge.

      @Munku81@Munku816 жыл бұрын
    • i totally concur! kzhead.info/sun/q8awcrmAnnqMlGg/bejne.html (Michelle Obama insists that you GET UP & MOVE YOUR A$$!)

      @AnitaCock@AnitaCock5 жыл бұрын
  • The talk is good. The book is great. I am on the 2nd read and find it to be one of the better maths books I have read. Any engineer or engineering student should get much from this book simply from the exposure to applied statistical mathematics. Thank you for a wonderful book.

    @thomaskirsch2209@thomaskirsch22095 жыл бұрын
    • Thomas Kirsch is the book something like freakonomics?

      @ravegraveyard@ravegraveyard4 жыл бұрын
  • Regarding the first story, I've heard that before, but it was a different story. It was about helmets in WWI. The generals wanted to know why wearing helmets caused so many more wounded soldiers and how to fix the problem. The analyst pointed out that dead soldiers without helmets weren't counted among the wounded.

    @Blackmark52@Blackmark528 жыл бұрын
    • Yeah. It is called "Survivorship bias". en.wikipedia.org/wiki/Survivorship_bias

      @user-qo3qm7ud1d@user-qo3qm7ud1d5 жыл бұрын
    • Heard this same story about Lord Blacketts operational research group in the UK....

      @TooManyBrackets@TooManyBrackets5 жыл бұрын
    • I think if the Brits took the target off the fuselage, more pilots would come back.

      @tzslungnip3843@tzslungnip38435 жыл бұрын
    • Tzs Lung Nip but what if that was kind of a reverse-psychology trick, that made the enemy shoot at the target instead of other more fragile bits of the airplane? ;-)

      @irrelevant_noob@irrelevant_noob5 жыл бұрын
    • @@irrelevant_noob I think that's what they tell the new widows.

      @tzslungnip3843@tzslungnip38435 жыл бұрын
  • My observation has been that when using “quick picks,” the lottery appears to be set up to “share” by giving several people the same combination, thus spreading out a large winning and creating more winners with smaller amounts. Many large totals are split among several people who admit they used “quick picks.”

    @kathyyoung1774@kathyyoung17745 жыл бұрын
  • Great book... very entertaining read. Got it from the library, but when I finished I had to go buy a copy just to have, cus I love having cool books (especially cool math books). This is a cool one.

    @zenpvnk@zenpvnk5 жыл бұрын
    • lol It is so cool it's Tricy-cooled...like Billie Eilish riding around on tiny tricycle. Three times for emphasis? Why no love for Empha-bro though? 😂😂😂

      @adamkaidunnaustralia5158@adamkaidunnaustralia51584 жыл бұрын
    • @@adamkaidunnaustralia5158 ugh come on

      @guptahaha@guptahaha2 жыл бұрын
    • @@guptahaha ...no, you come on, what can't feel enough to lol, so you troll on year old posts thinking they won't reply maybe? I'm sad for you bro and happy for me knowing that i can find whimsy in the small things while you get your rocks off trashing others thinking that somehow makes you a bigger person 😢😂 hope you get a life but have a great day anyway if you dont, deuschebag 😂😎👍

      @adamkaidunnaustralia5158@adamkaidunnaustralia51582 жыл бұрын
    • Do you have pdf?

      @KUniverseY@KUniverseY2 жыл бұрын
  • Fasinating. Thank you for uploading.

    @ananyasrivastava5128@ananyasrivastava51284 жыл бұрын
    • I love you

      @aminkanji8501@aminkanji85012 жыл бұрын
  • amazing topic and and super interesting book.. i will buy it and read it ASAP

    @BelalAlDroubi@BelalAlDroubi4 жыл бұрын
  • 27:00 Haven't seen ahead yet, but I think I know why they filled it out by hand. For the strategy to work, they needed all different numbers. Having the "quick picks" would have given them tickets with the exact same number. Lets see if I'm right.

    @erictaylor5462@erictaylor54624 жыл бұрын
    • That was my thought too but that's not it at all.

      @TheDionysianFields@TheDionysianFields4 жыл бұрын
  • It would appear that the 200 or so thumbs down people are all great speakers but......not too intelligent. If you want to learn things in life sometimes you have to forget the medium and focus on the information being transmitted. Great talk. Thank you.

    @Dr10Jeeps@Dr10Jeeps5 жыл бұрын
    • Sorry, he was tough to listen too and made a huge error at the start of his "big" example. Tough to have faith in the presentation.

      @shawnpheneghan@shawnpheneghan5 жыл бұрын
  • You don't know that you don't know. What you do know, is never complete and absolute. Therefore, one should always assume he is ignorant.

    @leeorshimhoni8949@leeorshimhoni89494 жыл бұрын
  • Great presentation, very engaging and thought provoking , thank you RI!

    @ddabo4460@ddabo44605 жыл бұрын
  • For the second question had it been considered that if a quick pick machine picks numbers at random, so the students may have just been trying to avoid receiving multiples of the same number?

    @niallfm4409@niallfm44099 жыл бұрын
  • @ 8:06 the expected value of the lottery ticket is not 79.8 cents, it's 59.1 cents. The error is in assuming that a 'free ticket' has the value of the ticket price, when the value is actually the expected value of the ticket. This produces an equation like: n = 1/9.3 + 4/39 + 15/80 + 5/47 + n/6.8 n-n/6.8 = 1/9.3 + 4/39 + 15/80 + 5/47 5.8n = 6.8x(1/9.3 + 4/39 + 15/80 + 5/47) n = (6.8/5.8)x(1/9.3 + 4/39 + 15/80 + 5/47) which works out to be $0.5908...

    @n-steam@n-steam5 жыл бұрын
    • Another interesting point is that the state does not get that $0.80 on the free tickets nor does it increase the rollover.

      @Jeff121456@Jeff1214565 жыл бұрын
    • I disagree. But I guess it's debatable. Here I'd say the value is the price. Even if it's the expected value, we have a recursive definition because the E.V. depends on the value. I guess you could call it x and get a simple equation in x (which appears on both sides).

      @ReasonableForseeability@ReasonableForseeability4 жыл бұрын
  • I just watched it because it went into autoplay, because de title sounded a bit clickbaity... And this lecture proved to be better than I could even imagine.

    @arnbrandy@arnbrandy3 жыл бұрын
  • Great math lecture! Still trying to sort our the logic of why the geometry idea works on a random drawing...

    @jamesrogers2963@jamesrogers29634 жыл бұрын
    • It isn't about the geometry, it's about the possibilities.

      @packrat2113@packrat21134 жыл бұрын
  • I am currently reading the book, its really awesome! This video really helped land the lottery story.

    @rbrijeshy@rbrijeshy6 жыл бұрын
  • Great lecture, good students, fun time spent here.......

    @davewhiteatpsynthase@davewhiteatpsynthase4 жыл бұрын
  • Really interesting talk although I felt that in terms of narrative it kind of fizzled out toward the end.

    @chrisofnottingham@chrisofnottingham9 жыл бұрын
    • The end was the exciting part, where he brought in the connection with projective geometry.

      @KarenSDR@KarenSDR5 жыл бұрын
    • Yes, narrative is important.... what is narrative?

      @lancebaker1374@lancebaker13744 жыл бұрын
  • Is it possible to get same logic and diagram representation for 4 number combination for set of 1to 20?

    @malaypatel1118@malaypatel11183 жыл бұрын
  • This talk is GREAT! His passion is infective.

    @gwennoack@gwennoack4 жыл бұрын
    • You meant infectious, right?

      @tylercooper1551@tylercooper15512 жыл бұрын
  • I think like this by nature all the time. People love to attempt arguing with me and always lose quickly. Especially my family they hate me.

    @tinmvn@tinmvn7 жыл бұрын
  • If you guys have any info on how to get further knowledge on combinatorial design theory like youtube videos or tutorials, anything?

    @Sebentheyargimachine@Sebentheyargimachine4 жыл бұрын
  • What a unique way to teach math without numbers. That's like teaching the alphabet with numbers instead of letters

    @samuelstanley2454@samuelstanley24543 жыл бұрын
  • This reminds me of the Chinese fortune cookie problem. In Canada they have a lotto called 6-49. Or in combinatronics 49 choose 6. Or 13.9 million combinations In many Chinese restaurants they give out fortune cookies with your bill. People would use these numbers for picking lotto numbers. Of course there was no better chance to win then using any other 6 numbers then the 6 that was on the fortune cookie. What people did not realize was the printer of the fortune cookies was lazy and they did not have a random number generator for the six numbers. So the printer printed a few thousand fortune cookies using the same 6 numbers. So purely by chance of course after many years the lotto number matching the fortune cookie came up. The lotto commission discovered many people won using the same 6 numbers and people were disappointed to share the jackpot with many others. At first the commission suspected fraud but soon found out that people were using the numbers on the fortune cookie. The commission talked to the printer and asked them to use more random numbers when printing fortune cookies. So the advise in Canada is to NOT use numbers from fortune cookies because it decreases your chance of sharing the jackpot.

    @canadiannuclearman@canadiannuclearman5 жыл бұрын
    • Same problem with RC radios. Some manufacturers seem to make radios of the same frequency in batches. Sent to stores in batches. Bought by guys in the neighborhood from the same store. . . Then the field has four other guys on your frequency and there are a dozen frequencies not being used:(

      @karljordan7114@karljordan71145 жыл бұрын
    • Gary Lewis interesting story. Only one problem with it: the conclusion. It should rather be that using the fortune cookie numbers would INCREASE the chance of sharing a jackpot, i think you meant that it decreases the chance of getting an unshared jackpot. ;-)

      @irrelevant_noob@irrelevant_noob5 жыл бұрын
    • So the optimal strategy is to collect a bunch of fortune cookies and DON'T use their numbers when playing the lottery.

      @gangfire5932@gangfire59325 жыл бұрын
    • Gary Lewis Good thing this guy didn't listen to you www.wcvb.com/article/fortune-cookie-means-big-fortune-for-powerball-winner-1/27736099

      @EricPena86@EricPena865 жыл бұрын
    • @@gangfire5932 Yes, and DON'T use ANY numbers you did not invent yourself. Germany 1977: Over 200 players shared the jackpot, almost all living in the north west. Also Germany 1977: The same six numbers were drawn, which were drawn in the Netherlands the week before.

      @hugo3222@hugo32224 жыл бұрын
  • Great vid!

    @rainmaker704@rainmaker7044 жыл бұрын
  • Can anyone explain to me how the diagram works @42:15 - I got the rest of the lecture without any problems, and understand in general what he was doing. But that visual abstraction really lost me, and he didn't explain it well at all.

    @lw1391@lw13914 жыл бұрын
  • I'm surprised the lottery organizers are so careless to not even calculate payouts, basically the first job you should have done. Also, in these state lotteries, does a person matching 4 also win the prize for matching 3, 2 and 1? If not, the tables are incorrect.

    @anch95@anch953 жыл бұрын
  • This was great. Where is the Q & A?

    @cantavoidtrite@cantavoidtrite3 жыл бұрын
  • Wald has many contribution to statistics. Thanks

    @kparag01@kparag016 жыл бұрын
  • I used to calculate the expected value of various games like keno and lottery. They were never below 1.0. I feel like I missed out not living in Mass and knowing this lottery existed. I feel like the roll-down would have triggered me to do the calculation on roll-down days. Whether or not I would have had the confidence to go out and buy a lot of tickets to make money is another matter, but my goodness there were easy millions for the taking.

    @justinjames3028@justinjames3028 Жыл бұрын
  • When buying a lot of tickets, if selecting numbers randomly, how do you prevent duplication? Two tickets with the same numbers would, in effect, be paying for the same ticket twice. This isn't a problem when getting 5 tickets, but the chance of duplication goes up with more and more tickets.

    @erictaylor5462@erictaylor54628 жыл бұрын
    • +Eric Taylor but why isn't it both?

      @jonathanzilk6089@jonathanzilk60898 жыл бұрын
    • Jonathan Zilk Both what?

      @erictaylor5462@erictaylor54628 жыл бұрын
    • oh never mind. I misread your comment.

      @jonathanzilk6089@jonathanzilk60898 жыл бұрын
    • Two identical tickets will still give each their prize. There are always duplicates in lotteries, which is why you see multiple winners sharing a jackpot.

      @DanielSmedegaardBuus@DanielSmedegaardBuus8 жыл бұрын
    • Daniel Smedegaard Buus No not always. Also if one person buys both duplicate tickets then they are in effect the SAME ticket. Both tickets "win" but the prize is split between them. If one person gets both halves they have gotten one whole prize.

      @erictaylor5462@erictaylor54628 жыл бұрын
  • Mathematics is huge. Integral. Line integral. Straight lines are integrated. Then surface integral. That's called plane integrals. Wave integral which are integral of wave type curves. Circle integral somewhat like circle inside a circle etc.

    @venkateshbabu1504@venkateshbabu15043 жыл бұрын
  • Interesting stuff

    @RonDAvilar@RonDAvilar8 жыл бұрын
  • His book was insanely good

    @chickenshieee@chickenshieee5 жыл бұрын
  • in the lottery example picking by hand will also give you more chances just by removing duplicates. Because two winning ticket 167 and 167 that match the numbers still only win 6 dollars so if all 7 numbers are the same and match the jackpot you are wasting the other 6 tickets. Probably not significant in real example because it assumes you win the whole jackpot on at least two tickets, so probably not worth filling in 200,000 scant ron forms.

    @myginfo@myginfo7 жыл бұрын
    • Not sure exactly what the maths behind the roll-down is, but picking by hand also gives the chance of choosing numbers that other people are less likely to pick, possibly giving a bigger share of the full pot. E.g. don't pick straight sequences. Don't pick only numbers under 31. (People have a bias towards picking birthdays) etc.

      @Varksterable@Varksterable5 жыл бұрын
  • wow sal's punishment is going really well!

    @dondake3409@dondake34096 жыл бұрын
    • Benny Z literally all I was thinking 😂😂

      @bee6418@bee64184 жыл бұрын
    • hahahahahaha

      @Ensource@Ensource3 жыл бұрын
    • I literally clicked on it thinking it was a punishment lol

      @ballsense4142@ballsense41423 жыл бұрын
    • 🤣🤣🤣🤣🤣

      @poeticflames@poeticflames2 жыл бұрын
  • I was thinking about to buy the book and then watched this video. Is it his book mostly talking about lottery? I thought I can get some math things that I can use in life.

    @darumakabu3457@darumakabu34572 жыл бұрын
  • Best math anecdote ever.

    @Ozgipsy@Ozgipsy Жыл бұрын
  • At around 3:50, I understood that he was actually talking about "rational intuition" : intellectual constructs leading to science and philosophy (real philosophy, not Oprah's "feel good" psychology for lemmings). Mathematics is a "hardcore" consequence of such constructs, a tool that we've invented to aid us for such endeavor in "materialistic" science.

    @DelireWeb@DelireWeb5 жыл бұрын
    • If I am reading between the lines of your post correctly, I think you would enjoy this video: kzhead.info/sun/hLCMidOXkHaMiaM/bejne.html

      @Hippiekinkster@Hippiekinkster4 жыл бұрын
  • isn't probability or permutation & combination help to solve lottery problem ?

    @anikyt7570@anikyt75707 жыл бұрын
  • with the lottery game i used, 123 - 234 - 345 - 456 - 567 - 167 - 256. the "random" numbers chosen were 5,6,7--1,6,7--2,4,5--1,3,4--. Jordan talks about geometry and intersecting lines as a way to guarantee which sequence of numbers will be picked, based off of Jordan's triangle you have the triangle base ____ 1,2,3. right side you have \ 3,5,7 and left side u have / 1,6,7 with 4 being in the center. if you change the points of intersection with a random number from 1-7 u are not guaranteed the same result. example being, triangle base ____ 7,6,5. right side \ 5,4,3. left side / 3,2,7 and the central number being 1. so my question is.. why and how are the numbers at the intersecting points chosen and why cant they be random?

    @bendanonfawkes4189@bendanonfawkes41893 жыл бұрын
  • Regarding the Book ..can a layman understand the maths in the books ..does it have references ..

    @granand@granand3 жыл бұрын
  • As soon as I realized he was saying "umm" I could no llonger really take in what he was saying. Good note for future

    @johngalt517@johngalt5174 жыл бұрын
  • I believe the reason they controlled the numbers selected was to make finding the winning tickets easier.

    @DanicaChloe@DanicaChloe5 жыл бұрын
    • We need more upvotes on this answer, because it's actually the right one and this guys speech is horribly ironic given the title. Lotteries are completely random which means it doesn't matter which numbers are chosen since they all have the same probability of being the winning numbers.

      @MrJackpots@MrJackpots Жыл бұрын
  • Excellent video illustrating how mathematical thinking was used to beat the Massachusetts lottery. Please post the letter from the Massachusetts Treasurer regarding this incident, or post where one can find this letter.

    @robertschlesinger1342@robertschlesinger13424 жыл бұрын
    • Note that the aforementioned 25 page Letter from the Massachusetts Treasurer is available online at several websites and archives for the State of Massachusetts. Amazing but true story involving the ingenious use of mathematical thinking.

      @robertschlesinger1342@robertschlesinger13424 жыл бұрын
  • The short story he told is called survivor bias. Veritasium covered this in a very fun way.

    @husainshaikh8724@husainshaikh87245 жыл бұрын
    • thanks, checking that out!

      @Ensource@Ensource3 жыл бұрын
  • How about getting the number as "111" in that case you have all deuce..I hope lottery example outcome is 10P7 not 10C7. Considering repetition is allowed.

    @arpitguptag@arpitguptag5 жыл бұрын
    • Repetition is not allowed in the lottery, at least not in the US. So something like 111 would not be possible in his simplified lottery.

      @cleetose@cleetose5 жыл бұрын
  • Great story about Abraham Wald, and great video.

    @robertschlesinger1342@robertschlesinger13424 жыл бұрын
  • Nice 👍

    @barathvenkatachalam7068@barathvenkatachalam70682 жыл бұрын
  • Hmm, but are we not gambling on the odds of the variation? How do you calculate that? That would be the odds right?

    @peterskove3476@peterskove34764 жыл бұрын
  • Please don’t hate on him. It’s a misunderstanding. The title doesn’t explain that the title is the name of his book, so it basically half clickbait. That’s why he is talking about his book. The book is actually great!

    @sejalb725@sejalb7256 жыл бұрын
    • I'd prefer the book over his lecture, until he gets some coaching on presentation.

      @bastiat6865@bastiat68655 жыл бұрын
    • I've never heard the expression "hate on", versus plain "hate". Where are you from?

      @ReasonableForseeability@ReasonableForseeability4 жыл бұрын
  • Excellent and interesting talk. For more on the Euclid's parallel line axiom, search "Ditching the fifth axiom."

    @toolhog10@toolhog109 жыл бұрын
  • Interesting talk, but the title is misleading.

    @David-tp7sr@David-tp7sr8 жыл бұрын
    • No, it isn't. This combinatorial design is precisely to devise a strategy to avoid losing (meaning that all your guesses of the lottery extraction were wrong). If you follow such a strategy, your bets will be "correct" in a precise sense, as opposed to being "wrong".

      @itellyouforfree7238@itellyouforfree72384 жыл бұрын
    • @@itellyouforfree7238 Depends on how you define misleading, I think "inept" is a better word.

      @anch95@anch953 жыл бұрын
  • interested to what the plane looks like with the 47 lottery numbers

    @kaen888@kaen8887 жыл бұрын
  • In the calculation of the expected value for the Mass Lottery, you used $2/6.8 for the contribution of winning a free ticket. But a free ticket isn't worth $2. As a first order estimate - as you point out - the ticket is worth 80 cents. Using simple feedback loop reveals the true value of a ticket as $0.59.

    @shawnheneghan4110@shawnheneghan41105 жыл бұрын
    • What a coincidence! This video was published almost 4 years ago, and yours is the only comment I saw about it. I noticed the same thing only one day later. I computed the same return of 59.09 cents per ticket.

      @jimmonte9826@jimmonte98265 жыл бұрын
    • Oops. I saw another person catch it 5 months ago. Search does not fully work in these comments.

      @jimmonte9826@jimmonte98265 жыл бұрын
  • Excellent overview of how some MIT students beat the Massachusetts Lottery, taking away $millions in profits..

    @robertschlesinger1342@robertschlesinger13424 жыл бұрын
  • can 22 numbers work with that formula

    @anthonyholder3130@anthonyholder3130 Жыл бұрын
  • 18:00 "The State knows who is winning." Not necessarily. The State has the information on who is winning, but unless someone who has the big picture looks at the information then the State doesn't know anything. Remember, not all of the winning tickets are coming from the same store. Everyone who plays has the same chance of winning, so you are selling winning tickets from all the stores. You need someone who knows how many winning tickets are coming from each store AND you need someone who can see that these three stores are selling a lot more tickets than the others. *THEN* that person needs to understand what these three stores have in common.

    @erictaylor5462@erictaylor54624 жыл бұрын
  • Is there a Q&A for this video?

    @dustinking2965@dustinking29654 жыл бұрын
    • Afraid not!

      @TheRoyalInstitution@TheRoyalInstitution4 жыл бұрын
  • Obviously this is a case of selling below cost and making it up on the volume. :)

    @alanhaisley4870@alanhaisley48704 жыл бұрын
  • At 0:43 "...about a mathematician named Abraham Wald who was a mathematician..."

    @lancebaker1374@lancebaker13744 жыл бұрын
    • ...... “who was a mathematician that...” he was explaining who he was and what the situation was!!!! As in........ “Lance Baker is a bell end, .......a bell end who interrupts other people’s sentences and anecdotes because he craves attention and acceptance from his peers. Go watch something more on your level i.e. Teletubbies, button moon or challenge yourself and try Johnny Ball’s “think of a number” whilst struggling to come to terms with your social inadequacies knob cheese. ❤️🏴󠁧󠁢󠁥󠁮󠁧󠁿❤️

      @MrLittlelionman@MrLittlelionman4 жыл бұрын
  • A bit late to the party but first time watching the video. I don't feel like the example with geometry is the best for the 7x3 grid since there's an easier way with less maths. Just pick each number 3 times and you will always get at least 3 correct deuces. Each one of your numbers will be in 3 different lines, and with overlapping your numbers are in 5 lines of the 7 lines of the grid. He did the same but in different order, so as long as you don't pick a number 4 or more times you can't lose in this game. 1 2 3 2 3 4 3 4 5 4 5 6 2 deuce 5 6 7 6 jackpot 6 7 1 2 deuce 7 1 2 1 2 3 2 3 4 3 4 5 4 5 6 5 6 7 2 deuce 6 7 1 2 deuce 7 1 2 2 deuce 1 2 3 2 3 4 2 deuce 3 4 5 2 deuce 4 5 6 2 deuce 5 6 7 6 7 1 7 1 2 1 2 3 2 deuce 2 3 4 2 deuce 3 4 5 2 deuce 4 5 6 5 6 7 6 7 1 7 1 2 I don't know if this applies to the original lottery with more numbers, but for the small one you really don't need geometry.

    @mahuk.@mahuk.4 жыл бұрын
  • Nice

    @RanBlakePiano@RanBlakePiano4 жыл бұрын
  • He really loves that lottery game. 😂😂

    @yves7778@yves77782 жыл бұрын
  • Fun talk, he should do more.

    @paxdriver@paxdriver9 жыл бұрын
  • got the jackpot!

    @Darius.f@Darius.f7 жыл бұрын
  • The most practical way to win in the lottery is to play the same most probable numbers in each draw for a long time.

    @onderozenc4470@onderozenc44704 жыл бұрын
  • Ive got his book for my birthday.. Neat!

    @joshinils@joshinils9 жыл бұрын
  • Nerds broke the lottery. I love that story so much.

    @acetate909@acetate9095 жыл бұрын
    • Except they didn't. They made the state a lot of money.

      @TheDionysianFields@TheDionysianFields4 жыл бұрын
  • Hardly any of the planes that come back hardly ever have bullet holes in the pilot, therefore, pilots are hardly ever hit when the plane is shot at. The thing is, when the pilot ends up with bullet holes the planes hardly ever get back.

    @erictaylor5462@erictaylor54624 жыл бұрын
  • One of the other speakers used the airplane story... can't remember the other one... watched too many so far...

    @kiddiescripterkiller@kiddiescripterkiller5 жыл бұрын
  • This is the most happy mathematician in the world. I can't even imagine this guy gets ever saddened. I hope he doesn't do this during sex or on a funeral.

    @lurker1973@lurker19736 жыл бұрын
  • Not what I expected from the title but fun and interesting... as expected from someone talking about how to win the lottery jackpot.

    @historion@historion2 жыл бұрын
  • Even with the math I know, I am sure that I know that I'm unsure of everything

    @ryanvelazquez1231@ryanvelazquez12318 жыл бұрын
    • That's a good thing. If you were sure about everything, you'd be just like Donald Trump... wrong about everything.

      @Hippiekinkster@Hippiekinkster4 жыл бұрын
    • @@Hippiekinkster He was successful in business, then t.v. then was able to win a presidential candidate. Maybe you should think about that statement. Maybe he is only wrong in your eyes, just because he doesnt have your political view doesnt mean hes wrong.

      @missionpupa@missionpupa4 жыл бұрын
    • I used to be like that too. I did not believe in belief itself, so could not believe a I did not believe either or that it existed or did not. If you are unsure that you are sure about being unsure, my advice is to focus on increasing your information for analysis and in preparation for any possible outcome, whether it exists or not is irellevant I know now, your unsure feelings are valid but not as important as your drive and focus to pursue the best ways to learn and retain what you have learned. Learn as much as is possible instead of seeking assurance or truth primarily, and if you feel like you've reached a point where you can go no further then you can start learning how to do impossible things like being able to ignore limited ideas, where things being labelled with terms such as assurance or the lack of it are irrelevant, you don't need to be sure or believe to act on things as you might understand if you feel somewhat like I did... just act on your desires and if you find yourself desireless at some point then you'll better understand the value of feelings and actions anyway. Most will never know what it's like and will never appreciate or focus enough on just feeling happy in the moment or how their sadness or anger means they still have hope and a desire too better their circumstances some way or another. If you ever dispair then just act on basic instinct at that point, lisyen to your body and spirit more, they will guide your conciousness well if it has been trained and filled with useful infornation they can use to force you to instinctually improve your circumstances. Anyway that was my experience and journey i chose to take for years which led me to an Absolutely irrefutable discovery in the end, it was rough for a long time but it was worth the indecisive and unsure feelings all the more in the end. Until you are absolutely sure it's wise to be unsure and assume nothing and remove as much bias as possible. Although I might tell my younger self to not form too many ill concieved habitual routines if I ever speak to him again, not because I regret having had them but because I'm curious to know how things would've played out and if any signifucant differences occur lol

      @adamkaidunnaustralia5158@adamkaidunnaustralia51584 жыл бұрын
  • Super interesting. Although i think Jordan doesn't understand sterling. Dollars then corrected himself to Euros?

    @Lyanraw@Lyanraw Жыл бұрын
  • WAIT!! So why does it make sense to fill in lots of tickets by hand and not automatically?? I missed that part. Did someone invent an algorithm to pick random numbers that is more likely to win a lottery than mere chance?

    @ElenaKomleva@ElenaKomleva4 жыл бұрын
    • No. The idea is that every combination of tickets has the same expected value (long run average amount of money you're going to make). However, some combinations can reduce the amount of risk (variance) more than others! Essentially, the MIT students were borrowing money, so they didn't want to EVER risk losing lots of money. So what they did was come up with a particular combination of tickets that (under the cash winfall rules) essentially guaranteed that they would make money by winning lots of minor prizes every time. The side effect was that it gave them less of a chance at winning the jackpot. The average amount of money they made would be the same regardless of what tickets they picked, but the MIT handpicked ticket combinations ensured they made steady returns rather than having more of a chance to lose money in each individual drawing. Hence all the advanced maths to come up with their handpicked numbers was used to guarantee the same return with less risk of a bad outcome. Of course, todays lotteries have a negative expected value, so using a strategy like that wouldn't help you win a normal lottery anyway- but it really helps in the Cash Winfall situation.

      @VineyKumar@VineyKumar4 жыл бұрын
  • Who wouldn't want to hear about the most wonderful languaje that we have!?!

    @85Spawn85@85Spawn85 Жыл бұрын
  • Why didn't the state do anything about it? Because state employees are seldom M.I.T. graduates.

    @MrMZaccone@MrMZaccone5 жыл бұрын
    • Edmond Dantez I smell corruption too. Shame!

      @ameremortal@ameremortal5 жыл бұрын
    • @@ameremortal Heinlein's razor - Never attribute to malice what can be accounted for by simple stupidity.

      @MrMZaccone@MrMZaccone5 жыл бұрын
    • Edmond Dantez I doubt the people who profit from running the lottery are stupid. People looking for a hack will not stop at anything. But for something like this to happen, you need corruption...

      @ameremortal@ameremortal5 жыл бұрын
  • Yes but just how many *um*s can one expect to hear in 48 minutes? I think we hit the jackpot here!

    @loser-nobody@loser-nobody7 жыл бұрын
    • Bertie Blue That's an unfair and false dichotomy. I was very interested and watched the whole thing. The "um"s still bothered me. The two are not mutually exclusive.

      @NoriMori1992@NoriMori19927 жыл бұрын
    • My comment was supposed to be a mathematical conundrum, though I can see why that wasn't perceived. It's been too long since I've seen the video but towards the end of it I started to ponder the probability of the word "um" being said in a prepared speech. Maybe if the speaker spent more of the 48 minutes talking in math I'd be distracted enough, like yourself, to not have any time to wander off topic. How unhelpful this is the first notification I get of any replies here...

      @loser-nobody@loser-nobody7 жыл бұрын
  • All numbers should be viewed as spins. No spin zero positive spin 1 and negative spin minus 1. And sum of all positive is inverted negative 12. All numbers are powers of some other.

    @venkateshbabu5623@venkateshbabu56236 жыл бұрын
    • Twelve negative spins when put on an inverter gives quantum leap.

      @venkateshbabu5623@venkateshbabu56236 жыл бұрын
    • That's the reason 144 is critical because it holds the power.

      @venkateshbabu5623@venkateshbabu56236 жыл бұрын
    • That is the total number of possible universes.

      @venkateshbabu5623@venkateshbabu56236 жыл бұрын
    • Venkatesh babu ii

      @mikejames2934@mikejames29346 жыл бұрын
    • @@mikejames2934 - you are wrong. -1. (slow people: double entendre alert)

      @Hippiekinkster@Hippiekinkster4 жыл бұрын
  • I’ve just realised something about fire it could be used as mathematical binary base-2 number..🔥

    @DonaldSleightholme@DonaldSleightholme6 жыл бұрын
    • please explain

      @ReasonableForseeability@ReasonableForseeability4 жыл бұрын
  • I do not much about math. I guess flight model matters are related somehow to trygonometry.en.wikipedia.org/wiki/Trigonometry

    @manino2@manino28 жыл бұрын
  • I wonder if its possible to create a finite projective formula in excel? I tried searching for one or a lead as to what would need to go into it but i could not find one. I would would be grate if the formula could auto generate combinations plus "one most likely" bonus number . This would probably result in more winds for if indeed Projective Geometry is the base of lottery systems. Even better ...... :-), Lets throw in results for the past year to five years, establish the most likely numbers based on that and then generate Lottery numbers out of that. If some smart person knows how to setup the Projective Geometry in Excel, please get hold of me :-), lets share as freely as i shared the above... I'm on IG and Facebook.

    @BrownieloveMike@BrownieloveMike4 жыл бұрын
  • At 8:08, the prize for getting 2 matches is a "Free ticket" being sold at $2, and not $2 in cash. The actual worth of the ticket for the winner should be the expected value of the ticket. So the equation should read: x = ($ 1 million/9.3 million) + ($4000/39,000) + ($150/800) + ($5/47) + (x/6.8) where x is the expected value.. Solving for x gives the expected value as 59 cents. So much for "Mathematical Thinking"!!

    @everybodyhurts3633@everybodyhurts36335 жыл бұрын
  • You don't need any weird geometry to hedge your bets on the lottery tickets, this overcomplicates things dramatically. You just need to avoid picking the same numbers too much and not picking other numbers enough. As a programmer, I find this natural... as you generate tickets, just keep track of how many times you've picked each number, and always pick from the least-picked ones.

    @agcwall@agcwall5 жыл бұрын
    • He just wants to make things complicated

      @alfredhitchcock45@alfredhitchcock454 жыл бұрын
    • I feel like you wouldn't have to buy hundreds of thousands of tickets to get into a position where the standard deviation around the expected value was acceptably low - especially if taking the long-term approach.

      @justinjames3028@justinjames3028 Жыл бұрын
  • Gonna get the book right now.

    @abdullahalmosalami2801@abdullahalmosalami28019 жыл бұрын
  • 28:11 those are permutations, no?

    @___xyz___@___xyz___4 жыл бұрын
    • No, they are combinations. In permutations, the order counts. There are 210 perms. 35x6=210. Each comb. gives 6=3! perms: ABC ACB BAC BCA CAB CBA

      @ReasonableForseeability@ReasonableForseeability4 жыл бұрын
  • I forgot how to program after 5 minute of listening to him speak. His pitch sliced through my memory.

    @ravinsharma2501@ravinsharma25018 жыл бұрын
  • Expected, value IS what one would expect, however on average. So why not just use the term average expected value instead?

    @davidjames1684@davidjames16845 жыл бұрын
KZhead