[Medium] Foreword to Mark Spitznagel’s book Safe Haven

Santa Marina — Karl Popper — Herman Hesse’s Sidharta — Mutua Muli — Porsche’s no substitute

Santa Marina

In my ancestral village in the Northern Levant, on top of a hill, stands a church dedicated to Santa Marina. Marina is a local saint, though, characteristically, some other traditions claim her –such as Bithynia or other Anatolian provinces of the Eastern Roman Empire.

Read the complete foreword on Medium.

Get the book on Amazon.

[YouTube] Breaking down Intuitively the Concept of Standard Deviation

SIMPLIFIED TUTORIAL, 1 (in the series where we break down concepts intuitively):
Before we talk about correlation, let’s discuss standard deviation, its analog in dimension 1. People don’t get while using it as a metric for deviation!

See the whole book (gets technical beyond Chapter 5)

Link to the Book: Statistical Consequences of Fat Tails: Real World Preasymptotics, Epistemology, and Applications

Nassim on CNBC Squawk Box: Bitcoin is a ‘gimmick’ and a ‘game,’ says it resembles a Ponzi scheme

“Black Swan” author Nassim Nicholas Taleb on Friday criticized bitcoin as a “gimmick,” telling CNBC he believes it’s too volatile to be an effective currency and it’s not a safe hedge against inflation.

Basically, there’s no connection between inflation and bitcoin. None. I mean, you can have hyperinflation and bitcoin going to zero. There’s no link between them,” Taleb said in a “Squawk Box” interview.

Link to the interview: cnbc.com/2021/04/23/bitcoin…

[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.