4 ms·
I wonder what the best way is to illustrate to those people that that coin example is ridiculous. It's so intuitive to us that the coin has no "memory". Howev
by lifeformed 13y ago
I wonder what the best way is to illustrate to those people that that coin example is ridiculous. It's so intuitive to us that the coin has no "memory". However, I could see why someone would think that 3 heads in a row mean the 4th will be more likely to be heads. If you didn't think about it much, it is a reasonable gut reaction to a layperson.
What if you told the person this: "What if you flipped a coin and it had come up 3 heads in a row. Is it more likely that it'll come up heads again? Well, what if you waited a minute before you flipped it again? What about an hour? 20 years? Would the odds go back to 50/50 then? At what point does the coin 'forget' its previous flips?"
I think putting it that way would help illustrate the absurdity of that way of thinking.
As an aside, I think if I flipped a coin 100 times and it was heads all 100 times, I would be willing to make a big bet on the 101st flip being heads. The odds of getting 100 heads in a row is so much smaller than the odds that something is wrong with the system (the coin is weighted, there's some sleight of hand going on, etc).
- nazgulnarsil 13y agoIf you don't know whether it is a fair coin 3 heads in a row is evidence that the 4th will be heads with slightly greater probability than tails.
- thaumaturgy 13y agoThere might be a sort of disease of anthropomorphism in modern (Western) culture. From a young age, kids are exposed to talking trains and animals and all manner of other things. This probably makes people very susceptible to ascribing properties to things that can't have them: "hot" slot machines, "lucky" dice, and so on.