can someone smart explain this to me. Please.. An infinite number of mathematicians walk into a bar. The first one orders a beer. The second one, half a beer, T
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can someone smart explain this to me

Please.

An infinite number of
mathematicians walk
into a bar. The first one
orders a beer. The
second one, half a beer,
The third, a quarter of a
beer. The barman says
you' re all idiots" and
pours two beers.
...
+457
Views: 18008
Favorited: 30
Submitted: 05/17/2014
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#22 - RyanTheLeet (05/17/2014) [+] (2 replies)
stickied by shema
User avatar #45 - myfourthaccount (05/18/2014) [+] (5 replies)
stickied by shema
suddenly, all of FJ commenters are mathematicians
We've all taken math classes before guys, no need to explain everything
User avatar #25 - lordvatican (05/17/2014) [+] (4 replies)
They just don't know their limits..
User avatar #32 - lech (05/18/2014) [+] (5 replies)
This is described to be the sum of n = 0 to infinity, of (1/2)^n
Which in layman's terms, are:
1 + 1/2 + 1/4 + 1/8 + 1/16... (1/2)^n ...
If you try to sum this series, it'll become closer and closer to 2, but it won't even reach it.
You'll have to do this an infinite amount of times for it to ever reach 2.
#6 - croc (05/17/2014) [+] (1 reply)
This is called an infinite geometric series which can be calculated as (1/(1-a)) where |a| <1 In this case a=(1/2). Thus (1/(1-a))=2. a=1/2 because the series in expanded form looks something like this: (1/2)^0+(1/2)^2+(1/2)^3... and so on
#29 - drillaz (05/17/2014) [-]
The first beer is for the guy who ordered an entire beer.
The second is for the rest:
Half of it will go to #2
Half of the other half will go to #3
Half of the other half will go to #4
And so it will go forever.
#76 - cloakedone (05/18/2014) [+] (1 reply)
And the bartender got not tip.

because mathematicians are assholes and they have their limits....
budum, tshhhh
#57 - CIS White Male (05/18/2014) [+] (4 replies)
The Limit as amount of beer ordered approaches zero of total number of mathematicians ordering is 2. The bartender gets their joke and pours 2 beers to accommodate them.
User avatar #60 to #57 - Sabre (05/18/2014) [-]
That answer was totally nonsensical even though I think you understand the math. This, right here, is why the average person thinks math is hard.
Math isn't hard, people who get it just don't know how to communicate.
#19 - robuntu (05/17/2014) [+] (7 replies)
They are idiots because.....

1.) Building codes only allow a certain number of people in the building at a time (fire marshals and all that jazz).
2.) An infinite number of mathematicians couldn't fit in the bar.
3.) Bars don't sell '1/2 beers' or '1/4 beers'. You can either buy a beer or not buy a beer.
#24 to #19 - CIS White Male (05/17/2014) [-]
You can get 1/2 a beer in any British drinking establishment.
User avatar #18 - comicexplain ONLINE (05/17/2014) [-]
They'll never get past the second beer.
User avatar #47 - doombunni (05/18/2014) [+] (10 replies)
I studied history in college so would someone please dumb this down for me
User avatar #49 to #47 - soupkittenagain (05/18/2014) [-]
Each guy ordered half of what the last guy ordered. The bartender put 2 cups. One was for the first guy. The second one was for everyone else. The reason why is because they infinitely take half of the prior order, which will be less than 1; so the second one is just how much beer is ordered rounded up.
User avatar #31 - devourhim (05/17/2014) [+] (2 replies)
wouldn't that make 1 beer and 75% of another ?
User avatar #38 to #31 - crusaderzav (05/18/2014) [-]
Nope, Because there's an infinite number of mathematicians. They each order half the amount of the previous order. so 1+1/2+1/4 would then equal w and 3/4 (what you said) But there's an infinite number of them. So you add 1/8+1/16+1/32 and so on. This total number will approach but never reach 2, practically. But it can be argued, and is generally accepted that if you did this an infinite number of times, you effectively reach 2.
User avatar #30 - thechosentroll (05/17/2014) [+] (2 replies)
Technically, it's one beer and one infinitely smaller beer.
User avatar #39 to #30 - crusaderzav (05/18/2014) [-]
Technically, it's not.
#90 - CIS White Male (05/18/2014) [-]
The summation of the geometric function 1/(2^n) is taken from 0 to infinity. While the function never techniquely reaches two, it becomes infinitetly close to two and as a result equals it.
User avatar #89 - alfrebecht (05/18/2014) [-]
Personally I would have said, "You're all causing severe stress to our concepts of reality by existing," and left the bar to cry in a corner.

But that's just me.
#77 - CIS White Male (05/18/2014) [+] (3 replies)
This always gets me a little upset, an easy way to look at it is : You step half way across a room in one step, the next step you take half of the half you just stepped ( 1/2 > 3/4), this is called an asymptote. No matter what, if you keep halving yourself you are never going to reach zero ( the other side of the room). You can get infintesimally close but you will never reach the other side.



Basically, My inner bill is getting rustled.
User avatar #65 - exclamation (05/18/2014) [-]
Assuming that everything is additive, it would work like this:
1 + 1/2 + 1/4 + 1/8 + 1/16...
It works because there is infinite decimal place possibilities, which would inevitably add up to 2. Plus, there's gonna be a lot of ******* mathematicians in that bar.
#59 - CIS White Male (05/18/2014) [-]
My math class the advanced class btw was told to continuously cut a piece of paper in half, as were all the other classes.
They all stopped at an average of 1/64
We were getting up to and beyond 1/4096 and were needing to use magnifying glasses and tweezers. Yes we are insane.
#53 - CIS White Male (05/18/2014) [+] (5 replies)
Actually with calculus I believe you can prove that the bartender is providing them with exactly enough beer. But it's been a while..
#66 to #54 - CIS White Male (05/18/2014) [-]
There's a series that describes the situation perfectly, i think sum 1/2^n, n going from 0 to infinity. It's been a while since I've done any math courses, but I'm pretty sure I saw it in a calculus class.
#48 - snood (05/18/2014) [-]
You know, technically this is math?
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