25 karma · joined February 23, 2016
[1] https://en.wikipedia.org/wiki/Tl%C3%B6n,_Uqbar,_Orbis_Tertiu...
Also, please explain the problem with using ROC here. The probabilistic interpretation of ROC's AUC is the probability of correctly ranking a random mixed pair (i.e. ranking the positive example higher than a negative one). How is that metric affected by the 80/20 split of the test data? Genuinely curios here...
This is a statistical oxymoron.
Anecdotally I know many talented people who got "broken" at high school level (due to any number of issues, from poverty to physical and emotional trauma). Having connections, mentors, initial capital, educated family, it all helps a lot.
This is not US-specific either, I made it to the US from a war-torn country across the globe with no money or connections, but I am extremely stubborn. There were definitely people who didn't make it this far who arguably had the pure IQ advantage.
FWIW I am also someone who knows what he's talking about, as I am a seasoned professional in the same line of work.
This guy's accomplishments don't make the Chebyshev inequality any less true (nor all the other theorems involving variance), so I don't see how he can claim something like this and be taken seriously by people in the field.
Variance / stdev appear all over probability and statistics. For example, in this famous Stats 101 theorem: https://en.wikipedia.org/wiki/Chebyshev%27s_inequality
https://www.reddit.com/r/Lightbulb/top/?sort=top&t=year
https://www.reddit.com/r/SomebodyMakeThis/top/?sort=top&t=ye...
Oh, and this dude: https://www.linkedin.com/in/prince-ioane-bagrationi-mukhrane...