It’s the moment from which all spoilers are derived—the moment in a movie that changes everything. It’s Bruce Willis realizing he’s dead at the end of The Sixth Sense, or Christian Bale coming home to a spotless apartment in American Psycho, or Edward Norton in Fight Club discovering Brad Pitt is a figment of his imagination. It’s “Soylent green is made out of people,” and it’s “Luke, I am your father.”
The moment is difficult to describe but easy to recognize; it’s often accompanied by misty eyes, trembling hands, and the open-mouthed gape of someone who’s just had their entire universe flipped upside down. In that moment they know, and we know they know, and we know now, too, and nothing will ever be the same.