this post was submitted on 08 Dec 2024
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the actual analog isn't a million monkeys. you only need one monkey. but it's for an infinite amount of time. the probability isn't practically zero, it's one. that's how infinity works. not only will it happen, but it will happen again, infinitely many times.
Infinite monkeys and infinite time is equally stupid, because obviously you can't have either, for the simple reason that the universe is finite.
And apart from that, it's stupid because if you use an infinite random, EVERYTHING is contained in it!
I'm sorry it just annoys the hell out of me, because it's a thought experiment, and it's stupid to use this as an analogy or example to describe anything in the real world.
You wouldn't need infinite time if you had infinite monkeys.
An infinite number of them would produce it on the very first try!
Then the fun part is finding which monkey has the result...
Obviously, but as I wrote BOTH are impossible, so it's irrelevant. I just didn't think I'd have to explain WHY infinite monkeys is impossible, while some might think the universe is infinite also in time, which it is not.
I also already wrote that if you have an infinite string everything is contained in it.
But even with infinite moneys it's not instant, because technically each monkey needs to finish a page.
But I understand what you mean, and that's exactly why the theorem is so stupid IMO. You could also have 1 monkey infinite time.
But both are still impossible.
When I say it's stupid, I don't mean as a thought experiment which is the purpose of it. The stupid part is when people think they can use it as an analogy or example to describe something
It's a theorem. It's theoretical. This is like complaining about the 20 watermelon example being unrealistic: that's not what it is about.
It's OK it exist, it's a thought that is curious enough. I'd even go so far and say it can have an educational function for children.
I just don't get why some people seem to think it's relevant in so many situations where clearly it's not.
That's not true. Something can be infinite and still not contain every possibility. This is a common misconceptoin.
For instance, consider an infinite series of numbers created by adding an additional "1" to the end of the previous number.
So we can start with 1. The next term is 11, followed by 111, then 1111, etc. The series is infinite since we can keep the pattern going forever.
However at no point will you ever see a "2" in the sequence. The infinite series does not contain every possible digit.
why do you keep changing the parameters? yeah, if you exclude the possibility of something happening it won't happen. duh?
that's not what's happening in the infinite monkey theorem. it's random key presses. that means every character has an equal chance of being pressed.
no one said the monkey would eventually start painting. or even type arabic words. it has a typewriter, presumably an English one. so the results will include every possible string of characters ever.
it's not a common misconception, you just don't know what the theorem says at all.
That's just not true. One monkey could spend eternity pressing "a". It does't matter that he does it infinitely. He will never type a sentence.
If the keystrokes are random that is just as likely as any other output.
Being infinite does not guarantee every possible outcome.
Any possibility, no matter how small, becomes a certainty when dealing with infinity. You seem to fundamentally misunderstand this.
no. you don't understand infinity, and you don't understand probability.
if every keystroke is just as likely as any other keystroke, then each of them will be pressed an infinite number of times. that's what just as likely means. that's how random works.
if the monkey could press a for an eternity, then by definition it's not as likely as any other keystroke. you're again changing the parameters to a monkey whose probability of pressing a is 1 and every other key is 0. that's what you're saying means.
for a monkey that presses the keys randomly, which means the probability of each key is equal, every string of characters will be typed. you can find the letter a typed a million times consecutively, and a billion times and a quadrillion times. not only will you find any number of consecutive keystrokes of every letter, but you will find it repeated an infinite number of times throughout.
being infinite does guarantee every possible outcome. what you're ruling out from infinity is literally impossible by definition.
That's exactly my point. Infinity can be constrained. It can be infinite yet also limited. If we can exclude something from infinity then we have shown that an infinite set does NOT necessarily include everything.
this has nothing to do with the matter
Anything with a nonzero probability will happen infinitely many times. The complete works of Shakespeare consist of 5,132,954 characters, 78 distinct ones. 1/(78^5132954 ) is an incomprehensibly tiny number, millions of zeroes after the decimal, but it is not zero. So the probability of it happening after infinitely many trials is 1. lim(1-(1-P)^n ) as n approaches infinity is 1 for any nonzero P.
An outcome that you'd never see would be a character that isn't on the keyboard.
This is actually a way dumber argument than you think you’ve made.
The original statement was that if something is infinite it must contain all possibilities. I showed one of many examples that do not, therefore the statement is not true. It's a common misconception.
Please use your big boy words to reply instead of calling something "dumb" for not understanding.