A VERY SIMPLIFIED TUTORIAL (VERY SHORT) Correlation measures are misused in the presence of nonlinearities.
(How a measure of unintelligence can give the illusion of high correlation with performance.)
Correlation measures are not supposed to be used in the presence of nonlinearities. When 2 variables correlate half the time (in a symmetric way around the mean), correlation will not be 50% but will show ~90%. Part of debunking IQ studies. If IQ works for disabilities but does not correlate with success, there is an illusion of correlation because of the biases in the metric.
Nassim and Yaneer discuss the Danish study on Face Masks published by Bundgaard et al., “Effectiveness of Adding a Mask Recommendation to Other Public Health Measures to Prevent SARS-CoV-2 Infection in Danish Mask Wearers.”
In a “Squawk Box” interview, Taleb specifically pointed to the importance of coronavirus testing. While countries have improved their capacity since the early days of the Covid-19 outbreak, Taleb said there has been a failure to develop quick, efficient testing at a scale that can cut off chains of transmission early. It also has the least economic cost, he said.
Nassim Taleb, New York University distinguished professor of risk engineering, discusses what he sees as misconceptions about the coronavirus pandemic and comments on the Federal Reserve’s shift in monetary policy. He speaks with Bloomberg’s Erik Schatzker.
Nassim Nicholas Taleb talks about the pandemic with EconTalk host Russ Roberts. Topics discussed include how to handle the rest of this pandemic and the next one, the power of the mask, geronticide, and soul in the game.