Stephen Downes

This is both the triumph and deep sadness of life: "sonder - n. the realization that each random passerby is living a life as vivid and complex as your own." From The Dictionary of Obscure Sorrows. "When your life moves on to the next scene, theirs flickers in place, wrapped in a cloud of backstory and inside jokes and characters strung together with countless other stories you'll never be able to see. That you'll never know exists."