Nassim Nicholas Taleb @nntaleb
2) An associated mistake commonly made, present in many papers with RR: if x has a mean m_x, and y has a mean m_y, the mean of x/y is not m_x/m_y 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