Trend-following is not such a good model. It’s simply eroded. Things change and being able to adjust is what made Mr. Simons so successful. “Statistic predictor signals erode over the next several years； it can be five years or 10 years. You have to keep coming up with new things because the market is against us. If you don’t keep getting better， you’re going to do worse.

每个词都知道一些恶性循环的事情。

即使做很困难的事情，也一定能够达到目的，没听说过想达到自己的愿望，而能回避困难的。遇事不怕事，人是要有些胆量的。拿得起、放得下、有担当，不逃避，才能直面凛冽的人生。

I'm not a celebrity. I'm an activist.