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The Time Everyone “Corrected” the World’s Smartest Woman (2015)

priceonomics.com

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Re: The Time Everyone “Corrected” the World’s Smartest Woman (2015)

#31

I may be missing something (not a mathematician, probabilist) but doesn’t the fact that the host would never reveal the car change the calculation? In the table shown in the article game 3 & 6 are nonsensical so with the remaining 4 games the odds are even between switch & stay.

Thanks for the helpful examples, makes sense. I had assumed it was accurate and I just wasn’t seeing it so good to understand why (also sleeping 4 hours a night with a new puppy so that doesn’t help).

Re: The Time Everyone “Corrected” the World’s Smartest Woman (2015)

#32

I'm familiar with the problem and my intuition is still wrong. I wonder if you couldn't design a gambling machine that has a variant of the Monty Hall problem built-in favoring the house (naturally).

From what I understand, that would just be overcomplicating the matter, because most modern video gambling machines just use a set number of wins per time interval.

Re: The Time Everyone “Corrected” the World’s Smartest Woman (2015)

#34

So this is at least in part about the "Monty Hall Problem" and why it's solution not intuitive. The article missed an important angle: when the host opens a door, he's giving you more information , which explains why it's better to switch. If you're the host, you need to know which door the car is behind to do your job 2/3 of the time, to avoid revealing it. It's this quality of unexpected information exchange that I…

Interestingly, if the host picks randomly (and if he reveals the car, you... start over, or you get the car, or you get nothing, or ... it doesn't matter because it happens not to have happened in the time we're considering) then you are faced with a 50/50 chance.

Re: The Time Everyone “Corrected” the World’s Smartest Woman (2015)

#35

The hubris of some of the her critics - especially ones with titles - is remarkable.

I'm willing to forgive pretty much anyone who's fooled by something that also fooled Paul Erdos: https://www.wired.com/2014/11/monty-hall-erdos-limited-minds...

The epilogue: "A few days after Erdos left, he telephoned to say that Ron Graham of AT&T explained to him the reasoning behind the answer and that now he understood. He proceeded to tell me the reasoning but I couldn’t fathom his explanation." -- Vazsonyi [1]

[1] https://web.archive.org/web/20140413131827/http://www.decisi...

Re: The Time Everyone “Corrected” the World’s Smartest Woman (2015)

#36

So this is at least in part about the "Monty Hall Problem" and why it's solution not intuitive. The article missed an important angle: when the host opens a door, he's giving you more information , which explains why it's better to switch. If you're the host, you need to know which door the car is behind to do your job 2/3 of the time, to avoid revealing it. It's this quality of unexpected information exchange that I…

This is always how I thought about it. The host is giving you more information about the 2/3 doors you did not choose, while the amount of information stays the same about the 1/3 door you did choose. It's this asymmetry that makes switching make sense.

Re: The Time Everyone “Corrected” the World’s Smartest Woman (2015)

#37
post #9

I guess Monte Carlo simulations weren't well-known or easily accessible back then? It would have been the perfect way to shut up her critics.

You can't fight fire with fire, but you can fight Monty with Monte. :-)

You often can and should fight fire with fire. For a literal instance, https://en.wikipedia.org/wiki/Controlled_burn

Re: The Time Everyone “Corrected” the World’s Smartest Woman (2015)

#38
post #9

I guess Monte Carlo simulations weren't well-known or easily accessible back then? It would have been the perfect way to shut up her critics.

This particular one isn’t that hard to just do by hand. Which I did at the time, was surprised at the result, and stared at the column long enough to convince myself why she was right.

Re: The Time Everyone “Corrected” the World’s Smartest Woman (2015)

#39

Which public intellectual introduced Monty Hall to the public when awareness of the problem was at a similar low, and received the fewest incorrect responses?

For the glib answer: probably the public intellectual who received the fewest responses, period.
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