Nassim Nicholas Taleb @nntaleb
2) An associated mistake commonly made, present in many papers with RR: if x has a mean mx, and y has a mean my, the mean of x/y is not mx/my because ratios are nonlinear. The mean of 1/y is not 1/(mean of y). See the error w/Blood Pressure below https://t.co/fzhzXXLDJm — PolitiTweet.org