But they don't I don't know, it's just -there isn't enough initiative in the world, not many people do it.

但是他们没有这样做,我不知道,也许只是,主动性不够,没什么人这样做

耶鲁公开课 - 金融市场课程节选

The theory doesn't try to explain why they separated. We don't know Perhaps it was disaffection.

这一理论并着力解释他们为什么分离，我们不知道,也许是因为逆反之意。

耶鲁公开课 - 旧约导论课程节选