Have you ever wondered about the lives of each person you pass on the street, realizing that everyone is the main character in their own story, each living a life as vivid and complex as your own?

That feeling has a name: "sonder." Or maybe you've watched a thunderstorm roll in and felt a primal hunger for disaster, hoping it would shake up your life.

That's called "lachesism." Or you were looking through old photos and felt a pang of nostalgia for a time you've never actually experienced.