We don’t start with models. We start with data. We don’t have any preconceived notions. We look for things that can be replicated thousands of times. A trouble with convergence trading is that you don’t have a time scale. You say that eventually things will come together.Well， when is eventually？

法律并不总是正确的，但它始终是法律。

质量不是一时的风尚；它是一种哲学。