
Nassim Nicholas Taleb @nntaleb
We use negative probabilities in quant finance since probability is just a KERNEL inside an integral, rarely a "real thing" outside of binary payoffs. So long as *no arbitrage* is satisfied. Only thing that matters is (by scaling) ∫densities=1. Similar to negative prices in oil. — PolitiTweet.org
John Carlos Baez @johncarlosbaez
Dirac took negative-energy electrons seriously. He realized a *missing* negative-energy electron would be a "posit… https://t.co/2Tjf4ccf1V