Right so when you choose originally it's a random 33.3% lucky dip.
Because the game show host will always pick a goat, switching makes sense.
This is because if you chose the car and switch, there's a 33.3% chance that the switched door will be a goat. Leaving the chance that it will be a car as 66.7%. It doesn't become 50/50 because the game show host always chooses a goat, eliminating it from the equation.
So if you're a game-show host and the contestant correctly guesses where the car is, you first ask the contestant if they have a math background, and if the answer is yes, you open one of the other doors knowing the contestant may know about "variable change" and thus selct the other incorrect door, thus losing the car. So much for the 66.7% advantage.
How is it 66.67% chance of getting door #1 correct if there are only 2 doors left after door #3 is gone? Isnt it 50% now, since there are 2 doors after door number #3 is gone going from 33.33% chance of getting it right to 50% correct of getting it?
when the host chooses to open one door and a goat shows up doesnt it make his chances 50% rather than 66% from 33% for there are now 2 doors each with a chance. So the guy's answer isnt solely statistics oriented but rather psycologically moulded too...
when the host chooses to open one door and a goat shows up doesnt it make his chances 50% rather than 66% from 33% for there are now 2 doors each with a chance. So the guy's answer isnt solely statistics oriented but rather psycologically moulded too...
@maaanddeuta He picked door number one witha 33.3 percent chance where doors 2 and 3 combined had a 66.6 chance of having a car so when door 3 was proven to not have the car it doesnt change the odds for the combined doors so door 2 has a 66.6 percent chance!
call me stupid. but i really want to try and understand this door thing....if he is left with 2 doors at the end, with one of the doors being the winner, why is he left with odds of 66.6 percent instead of 50/50? @_@
The chances he has of winning are 33% and stay at 33% when you dont switch doors because staying on the same door doesnt change anything however when you switch you now have changed you choice which changes the odds because prior to you switch one of the doors has been revealed and you now know what one of the doors is and are guessing another which is 2/3 options so you chances are now increased. hope this helps
@kendachampThe chances he has of winning are 33% and stay at 33% when you dont switch doors because staying on the same door doesnt change anything however when you switch you now have changed you choice which changes the odds because prior to you switch one of the doors has been revealed and you now know what one of the doors is and are guessing another which is 2/3 options so you chances are now increased. hope this helps
@kendachamp The "door thing" is known as the Monty Hall problem. You' can google many explanations. One simple explanation: If you initially pick a goat then the host removes another goat and so switching wins you the car. If you pick the car initially then of course switching will lose you the car. Since there's a 2/3 chance that you've picked a goat at the beginning, there's a better chance of winning the car if you switch. I hope that made sense.
the goat/door question was asked in my countrie´s national mathematical olympiad, for kids age 12-13 and it was ridiculously easy for most contestansts. This math is ridiculous, but people seems to thinks its actually high level ... people don´t even know how intelligent you can become studing things like IMO ( international mathematics olympiad).
who else thinks that if the car was under door #2 the girl would had never gave him another chance, but opened #1 instead and show him he didn't win anything.
@BDpartnercoJM its funny i got that question in my junior year in high school, i knew the answer but i didn't know how to explain it so i felt like a genius but also a dumbass.
@LizRocksMySox perhaps, yet tbh, check 'Marylin Vos Savant' on wikipedia. This math problem has been debated thouroughly by geniuses and highschool students etc alike. Caused quite some confusion :p
@LizRocksMySox he only asked that question to see if ben could solve something under emotions and variable change which is ... = SIMPLE MATH. so relax its just a movie.
@LizRocksMySox it's also a movie, explained in detail for an audience that probably doesn't go to mit, and may even not go to high school. way to overthink
there are three scenarios that can possibly play out. if the car is behind door 1, the host will open door 2 or 3 and you would switch to the other door and lose. if the car is behind door 2, the host would open door 3 and you would switch to door 2, thus winning the car. if the car is behind door 3, the host opens door 2 and you switch to door 3, winning the car again. out of the three different scenarios, 2 of which end with you winning the car if you switch.
@JLow5635 we talking about the probablity of getting the car. if I dont switch, I could either win or loose. it is a 2 by 2 matrix, not something described by you 1 loose against 2 winnings.
well believe it or not, JLow5635 is right... but only if you assume that the host always opens a door with a goat and that you always have the choice to switch...
if you know that the host always follow that rule you have 66.6% chance to get the car when switching
@vdings99 because as stated he was talking about the newton raphson method, this method fails when starting derivate is from true zero, this question can be partially proven through the newton method, if you put the question into an terms of variables such as non linear , you can use calculus to solve.
@plzdontkillme17 True, you are right. I just thought of it in terms of probability theory. But since mathematical probability is ultimately solved through partial derivatives, it can be solved without knowledge of probability theory.
If he doesn't know where the car is he can then open the door hiding the car and the fact that he opens an other door will simply bring back the chances to fifty fifty.While when he knows where the car is he purposely choose an empty door which then increases the probability to find the car. Check it if it was not clear. It's actually well explained on wikipedia and there is one part about when the host doesn't know where the car is.
@antoniooo33 I still can't seem to understand why his chances increases from 33,33% to 66,66%? Doesn't it only go up to 50%, since there's only 2 doors to choose from? Where can I find this explanation on wikipedia? What's the name of the problem?
@KKR3107 3 doors = 33.3 each , once one door is picked that eliminates that chance of a fault door, the second choice is now out of two doors if swapped, thus giving you another pick out the the orignial 3 doors, meaning you have increased from 33.3 to 66.6 , write it out as a linear program question or as a partial fraction and you will see
This is so stupid and you guys all believe it like the bible cause it's a movie omg look
Three doors =33% for each
Then you remove one, the 33% are split equally between the two doors left so it's fifty fifty. So you can change or keep the same door you had before it's the exact same thing.
@antoniooo33 NO..... think about it, if the guy doesnt offer the swap then yes your right, however the door can be switched so when eliminating the door it goes from 33.3 to 66.6
@lovelykk Yes, and it's not hard to understand it. I got it wrong because when he asked it, my first thought was, maybe he's giving me another option because maybe the one I chose has the car and he would like to give himself another chance for me not to get a car so I'll keep the door. I wasn't thinking mathematically which I should have.
i did that door statistics in high school. looks like Harvard isn't that impressive after all.
did anyone else work it out before he said he'd take the switch?
TheCrazyPrankster 1 day ago
@TheCrazyPrankster Yup. But this is supposedly MIT not Harvard.But still lol
DJx713 8 hours ago
i love the end of this movie. that teacher guy got owned.
Mr589742316 6 days ago
if it was me .. i ll not change . its not about the equation .. no one wan 2 giv u a free CAR :)
axyphere 1 week ago
@dudetocartman
Right so when you choose originally it's a random 33.3% lucky dip.
Because the game show host will always pick a goat, switching makes sense.
This is because if you chose the car and switch, there's a 33.3% chance that the switched door will be a goat. Leaving the chance that it will be a car as 66.7%. It doesn't become 50/50 because the game show host always chooses a goat, eliminating it from the equation.
AbsurdBanana 1 week ago
So if you're a game-show host and the contestant correctly guesses where the car is, you first ask the contestant if they have a math background, and if the answer is yes, you open one of the other doors knowing the contestant may know about "variable change" and thus selct the other incorrect door, thus losing the car. So much for the 66.7% advantage.
rockymountainsunrise 1 week ago
Wait a sec.
How is it 66.67% chance of getting door #1 correct if there are only 2 doors left after door #3 is gone? Isnt it 50% now, since there are 2 doors after door number #3 is gone going from 33.33% chance of getting it right to 50% correct of getting it?
Someone please explain to me so i understand?
dudetocartman 3 weeks ago
@dudetocartman weather there are two doors left is trivial since the whole problem is a rule of 3 it's weird i know
zayn2123 2 weeks ago
@dudetocartman i was thinking the same thing. lol
1446kevdog 1 week ago
What does he mean when he's talking about "Jimmy got a job at Google"?
DuskAndHerEmbrace13 1 month ago
i think he said something about staistics and somethng about variables and then some 7438262 and then some more 8472938469...% and then a new car
i think this movie is too smart for me
MrPame1a 1 month ago
Why does Cam (the thin guy with glasses) gets 2 pieces of cakes in a span of 10 seconds !? - 1:06 and 1:16
jmbd07 1 month ago 7
Can anyone help me, I've tried really hard to find the song playing from 7:45 - 8:05 but to no avail. Does anyone know what it is?
herrlosse 1 month ago
whats the song at 7:08?
mhz888 2 months ago
@mhz888 did you find out?
herrlosse 1 month ago
@herrlosse um no. you?
mhz888 1 month ago
haha 4:43 "well i wouldn't really care, my answer" he drops his american accent. which is surprising because its otherwise pretty convincing.
taylorgoodman93 2 months ago
like this if you skipped to 3:50 after watching that mythbusters episode.
GoodTimesWithBad 3 months ago 2
im in 6th and i solved the door problem lol
GameAddict101CL1 3 months ago
Comment removed
tqmn2 3 months ago
My boy's wicked smahht
iloveOVIE8 3 months ago
i get it now.. The guy is right...
maaanddeuta 3 months ago
This has been flagged as spam show
when the host chooses to open one door and a goat shows up doesnt it make his chances 50% rather than 66% from 33% for there are now 2 doors each with a chance. So the guy's answer isnt solely statistics oriented but rather psycologically moulded too...
maaanddeuta 3 months ago
when the host chooses to open one door and a goat shows up doesnt it make his chances 50% rather than 66% from 33% for there are now 2 doors each with a chance. So the guy's answer isnt solely statistics oriented but rather psycologically moulded too...
maaanddeuta 3 months ago
@maaanddeuta He picked door number one witha 33.3 percent chance where doors 2 and 3 combined had a 66.6 chance of having a car so when door 3 was proven to not have the car it doesnt change the odds for the combined doors so door 2 has a 66.6 percent chance!
forgetaboutit4000 2 months ago
but even if he didnt switch wouldnt he still have a 66.7% chance?door 3 and 1?
DragonLowStar1 3 months ago
@DragonLowStar1 no your wrong. He has a 66% chance of getting a goat first guess. So if he switched he would get a 66% chance of it not a goat.
technologycrazy 3 months ago
ITS GIGI!
bBudKeene 3 months ago
The monty hall problem came up in my class today!
Guess who was the only one in my class who could solve the problem!
4everLostinthemusic 3 months ago
call me stupid. but i really want to try and understand this door thing....if he is left with 2 doors at the end, with one of the doors being the winner, why is he left with odds of 66.6 percent instead of 50/50? @_@
kendachamp 4 months ago
@kendachamp because the host knows where the car is. thats the key point. i think door #3 has 0% or something
EpicRainbownizedStar 4 months ago
@EpicRainbownizedStar About your comment on 21.
The chances he has of winning are 33% and stay at 33% when you dont switch doors because staying on the same door doesnt change anything however when you switch you now have changed you choice which changes the odds because prior to you switch one of the doors has been revealed and you now know what one of the doors is and are guessing another which is 2/3 options so you chances are now increased. hope this helps
oregondork 3 months ago
This has been flagged as spam show
@kendachampThe chances he has of winning are 33% and stay at 33% when you dont switch doors because staying on the same door doesnt change anything however when you switch you now have changed you choice which changes the odds because prior to you switch one of the doors has been revealed and you now know what one of the doors is and are guessing another which is 2/3 options so you chances are now increased. hope this helps
oregondork 3 months ago
@kendachamp The "door thing" is known as the Monty Hall problem. You' can google many explanations. One simple explanation: If you initially pick a goat then the host removes another goat and so switching wins you the car. If you pick the car initially then of course switching will lose you the car. Since there's a 2/3 chance that you've picked a goat at the beginning, there's a better chance of winning the car if you switch. I hope that made sense.
notnek011 3 months ago
is that a mexican girl in harvard med?
vivianaNdaniel 4 months ago
@vivianaNdaniel
She's Filipino, Spanish and Chinese
hooters64 3 months ago
the goat/door question was asked in my countrie´s national mathematical olympiad, for kids age 12-13 and it was ridiculously easy for most contestansts. This math is ridiculous, but people seems to thinks its actually high level ... people don´t even know how intelligent you can become studing things like IMO ( international mathematics olympiad).
ColdGambler 5 months ago
jimmy is a troll at google
MrLocoboy17 5 months ago
Comment removed
MrLocoboy17 5 months ago
who else thinks that if the car was under door #2 the girl would had never gave him another chance, but opened #1 instead and show him he didn't win anything.
Griciu15 5 months ago
what the hell is that guy the math police?? he seems to know all about idea thefts in the history of mathematics...
h0wud0in2 5 months ago
he found a better way to approx zero than newton... yeah right
h0wud0in2 5 months ago
3:55 HE IS ONE IN THE NEW MOVIE ONE DAY!!
teamswitzfan 6 months ago
GIGI!
superboltboy 6 months ago
@BDpartnercoJM its funny i got that question in my junior year in high school, i knew the answer but i didn't know how to explain it so i felt like a genius but also a dumbass.
brownieman234 6 months ago
@brownieman234 I'm a junior and that happened to me today too lol.. i got extra credit without explaining it though :)
TheDreamerDisease 6 months ago
My AP Stats teacher asked us that door question!
karintapper 6 months ago
jimmy got a job at google
andresleo518 6 months ago
vegas baby
uchihamarjune 7 months ago
This has been flagged as spam show
Welll what can i say??. This movie is awesomeeeeee!!!!
denbest417 7 months ago
they suckk ass in basketball
TuNiZpRoPs310 8 months ago 3
that door question was high school level statistics. I thought this was MIT. lame.
LizRocksMySox 8 months ago 33
@LizRocksMySox yea it takes a high school student to understand the solution, but Ben to derive the solution on his own
RockNRoll924 2 months ago
@RockNRoll924 no, really this is something I had to figure out in high school statistics. It was one of the easiest concepts to grasp.
LizRocksMySox 2 months ago
@LizRocksMySox perhaps, yet tbh, check 'Marylin Vos Savant' on wikipedia. This math problem has been debated thouroughly by geniuses and highschool students etc alike. Caused quite some confusion :p
AlKhebir11 2 months ago
@LizRocksMySox lol i learned that in 7th grade.
jim248248 2 months ago
@LizRocksMySox only 33% of people understand/take statistics in high school lol u would be surprised.
iH4ck3r750i 1 month ago
@LizRocksMySox he only asked that question to see if ben could solve something under emotions and variable change which is ... = SIMPLE MATH. so relax its just a movie.
165sea 1 month ago
@LizRocksMySox it's also a movie, explained in detail for an audience that probably doesn't go to mit, and may even not go to high school. way to overthink
geddoe316 2 weeks ago
@LizRocksMySox Seriously? I learned about the monty hall problem on the radio in middle school.
nixthenamed 2 weeks ago
Wow, jimmy got a job at google. That's catchy
nintendokings 8 months ago 17
Sorry JLow....it's not quite that simple. Almost, but not quite. Wikipedia "the Monty Hall problem" on see how probability comes into play.
bantafodo 9 months ago
there are three scenarios that can possibly play out. if the car is behind door 1, the host will open door 2 or 3 and you would switch to the other door and lose. if the car is behind door 2, the host would open door 3 and you would switch to door 2, thus winning the car. if the car is behind door 3, the host opens door 2 and you switch to door 3, winning the car again. out of the three different scenarios, 2 of which end with you winning the car if you switch.
think it out. no math necessary.
JLow5635 9 months ago
@JLow5635 we talking about the probablity of getting the car. if I dont switch, I could either win or loose. it is a 2 by 2 matrix, not something described by you 1 loose against 2 winnings.
trainmango 5 months ago
@trainmango
well believe it or not, JLow5635 is right... but only if you assume that the host always opens a door with a goat and that you always have the choice to switch...
if you know that the host always follow that rule you have 66.6% chance to get the car when switching
krickrack 4 months ago
Jimmy got a job at Google!!!
slo03044677 10 months ago
ok Einstein. jesus fucking christ you need to get out more
javius1220 10 months ago
Comment removed
gwatson678 10 months ago
@gwatson678 omg your so stupid, stop trying to do it in your head, write the question out as a partial fraction and then you will see the answer
plzdontkillme17 10 months ago
@plzdontkillme17 You really don't have to be an asshole... well, maybe it just come to you naturally.
gwatson678 10 months ago
@gwatson678 alright dumbass
plzdontkillme17 10 months ago
why does he switch from non-linear equations and numerical methods to elementary probability theory?
Who can answer that question for me???
Maybe because he doesnt know shit about 2nd year math???
vdings99 10 months ago
@vdings99 because as stated he was talking about the newton raphson method, this method fails when starting derivate is from true zero, this question can be partially proven through the newton method, if you put the question into an terms of variables such as non linear , you can use calculus to solve.
plzdontkillme17 10 months ago
@plzdontkillme17 True, you are right. I just thought of it in terms of probability theory. But since mathematical probability is ultimately solved through partial derivatives, it can be solved without knowledge of probability theory.
vdings99 10 months ago
@vdings99 true :)
plzdontkillme17 10 months ago
I love Kevin Spacey
OneEndedStick 11 months ago
He's only 21 yrs old and he's all stressed about getting into Harvard Medical School immediately... LOL Gimme a break
tjduke1985 11 months ago
@tjduke1985 You have no idea how much it takes to get into harvard. Most harvard students get into harvard at age 19.
darkchimeraa 10 months ago
I k r @purple300
Ngozi2708 11 months ago
no idians, hispanics, blacks.
purpleheart300 11 months ago
@purpleheart300 3:06 There's a black guy.
antoniooo33 11 months ago 2
WOULD ANYONE LIKE TO TUTOR ME ON THIS??.. CAUSE I WANNA BE A SMART THUG..
LewisDwayne 11 months ago
Nevermind I didn't get that the host knows where the car is!
antoniooo33 11 months ago
@antoniooo33 The fact that the host knows where the car is doesn't change anything, it's only statistics...
JustOncheIt 11 months ago
@JustOncheIt
You're wrong.
If he doesn't know where the car is he can then open the door hiding the car and the fact that he opens an other door will simply bring back the chances to fifty fifty.While when he knows where the car is he purposely choose an empty door which then increases the probability to find the car. Check it if it was not clear. It's actually well explained on wikipedia and there is one part about when the host doesn't know where the car is.
antoniooo33 11 months ago
@antoniooo33 I still can't seem to understand why his chances increases from 33,33% to 66,66%? Doesn't it only go up to 50%, since there's only 2 doors to choose from? Where can I find this explanation on wikipedia? What's the name of the problem?
KKR3107 10 months ago
@KKR3107 3 doors = 33.3 each , once one door is picked that eliminates that chance of a fault door, the second choice is now out of two doors if swapped, thus giving you another pick out the the orignial 3 doors, meaning you have increased from 33.3 to 66.6 , write it out as a linear program question or as a partial fraction and you will see
plzdontkillme17 10 months ago
This is so stupid and you guys all believe it like the bible cause it's a movie omg look
Three doors =33% for each
Then you remove one, the 33% are split equally between the two doors left so it's fifty fifty. So you can change or keep the same door you had before it's the exact same thing.
antoniooo33 11 months ago
Comment removed
bobbylight111 11 months ago
@antoniooo33 NO..... think about it, if the guy doesnt offer the swap then yes your right, however the door can be switched so when eliminating the door it goes from 33.3 to 66.6
plzdontkillme17 11 months ago
@plzdontkillme17 Yeah I agree, however it's only if the host know where the car is.
antoniooo33 11 months ago
@antoniooo33 wrong, thats so wrong
plzdontkillme17 10 months ago
Comment removed
gwatson678 1 year ago
Conditional probability also plays a part in this problem.... :)
gwatson678 1 year ago
girls punch like mongs
yorkokillo 1 year ago
this door question is called the Monty Hall problem.
lovelykk 1 year ago
@lovelykk Yes, and it's not hard to understand it. I got it wrong because when he asked it, my first thought was, maybe he's giving me another option because maybe the one I chose has the car and he would like to give himself another chance for me not to get a car so I'll keep the door. I wasn't thinking mathematically which I should have.
purpleleach1 1 year ago
who else cant wait for that door question to come up in your class so you can look like genius?
BDpartnercoJM 1 year ago 149
@BDpartnercoJM You won't look like a genius with that...
antoniooo33 11 months ago
@BDpartnercoJM Haha It actually did come in my assessment tho as Three Prisoners problem, but sadly the lecturers did not accept that answer.
tqmn2 3 months ago
omg they so ripped the door-show thing of of numb3rs
lovehater30 1 year ago
he's genuis !!!
Respocty20 1 year ago
Thanks for the effort.
ageisold 1 year ago
jim is so handsome!!!!!!!!
lolometroflogo 2 years ago 36