They're spending money on concrete, and bricks, and machinery, and they could be doing that wisely or unwisely and that's beyond finance to evaluate.

他们花钱买混凝土,砖块和机器,这个决策可能明智也可能不明智,但这不是金融学的讨论范畴

耶鲁公开课 - 金融市场课程节选

You know that buying gold coins from some newspaper ad is not a smart investment, but they know that there will be people out there.

你们明白购买报纸广告上宣传的金币,是一种不明智的投资选择,但销售商知道总会有人上钩

耶鲁公开课 - 金融市场课程节选