[YouTube] Correlation measures are misused in the presence of nonlinearities

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.

Paper: SCALA POLITICA – Politics and Governance Under Scaling and Uncertainty

Most of the tension resides between 1) Embedded, complexity-minded, multiscale/fractal localism (politics as an ecology/complex adaptive system), and 2) Abstract one-dimensional universalists and monoculturalism (politics as a top-down engineering project). We go beyond the verbalism; we rely on information theory, complexity theory, uncertainty approaches (say fragility), and probabilistic rigor to look at politics with the same eyes as we examine highly dimensional interactive elements such as nature, biological systems, internet networks, and medical issues.

Link to Paper – academia.edu/38433249/Scala_Politica

[Medium] Foreword for Cut the Knot: Probability Riddles by Alexander Bogomolny

How do you learn a language? There are two routes; the first is to memorize imperfect verbs, grammatical rules, future vs. past tenses, recite boring context-free sentences, and pass an exam. The second approach consists in going to a bar, struggling a little bit and, out of the need to blend-in and integrate with a fun group of people, then suddenly find yourself able to communicate. In other words, by playing, by being alive as a human being. I personally have never seen anyone learn to speak a language properly by the first route. Also, I have never seen anyone fail to do so by the second one.

Read the complete foreword on Medium.

Get the book on Amazon.

Nassim on CNBC Squawk Box: Global coronavirus response a case study of government incompetence and denial

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.

Link to the interview: cnbc.com/2020/11/02/…