every year, the government is under pressure to make an official recommendation on how much radiation is safe during a CT scan.

VOA: standard.2010.04.07

So you say, how can I make money beating the market if every quarter I have to tell everybody what I'm doing?

因此你会说,如果我按季度公布所有的投资活动,那我还怎么跑赢市场赚取利润

耶鲁公开课 - 金融市场课程节选