But the more I discussed the study with a wide range of people, the more I came to realize that cliffs appear to be a universal part of the human condition. The long arc of a life is never perfectly smooth. Look closely enough, and life is fractured, diverted, kinked, disrupted, severed, and transformed along the way. Look closer still, and people can find themselves reeling from cliffs and wandering in the fog, only to emerge in places they’d never imagined. Which brings us right to the cusp of another prevalent element of our human experience, the subject to which we now turn: fog.