> if your trading expected value is negative However, if you take the formula, assign yourself a positive trading edge and a large positive expected value you

> if your trading expected value is negative However, if you take the formula, assign yourself a positive trading edge and a large positive expected value you can justify placing whatever bet you want as a mathematical certainty. The most un-spoken about thing in all this is how exactly they went from +100bn to -8bn in a year.