translation.en: If mind-wandering were a slot machine, it would be like having the chance to lose 50 dollars, 20 dollars or one dollar. Right? You'd never want to play.  So I've been talking about this, suggesting, perhaps, that mind-wandering causes unhappiness, but all I've really shown you is that these two things are correlated.
translation.zh: 如果把走神看成一台老虎机，跟它赌只有三种结果 输50块，输20块 或者输一块钱。对吧？你肯定不想玩它。 索然我已经说了很多关于幸福感的，建议，假设， 走神也许会降低我们的幸福感，但是 我真正想为大家展示的是 “走神”和“幸福感”两者是有关联的。