争什么呢？你看到一点而已。我们是局外人，不要以为全知道。

As for trading, managing risk is a big task!  说没办法hedge, 你不懂而已。谁会让你开这车如果你说没法停？

银行借了钱出去，会把loan卖了，for mortgages, that is why there are three government agencies to faciliate the money move back and forth.  Never say ... it can't be hedged, it is funny.