We started out with just a simple idea: that you don't want to put all your eggs in one basket and if you had a lot of independent stocks you would want to just weight them equally.

我们从一个简单的想法开始：,你不想把所有的鸡蛋放入一个篮子里,如果你有许多互相独立的股票,你给它们相同的权重。

耶鲁公开课 - 金融市场课程节选