Nassim Nicholas Taleb @nntaleb
You did not need recent events to get that the mean-variance based methods, along with RISK PARITY used in finance (by many funds) are a fraud. I explained the details in #TheBlackSwan See paper how we (my friends & I) price options under power laws. https://t.co/ERACBTBZhb https://t.co/mHYZk0W0ok — PolitiTweet.org