The line comes from Jurassic Park, the 1993 film directed by Steven Spielberg, where mathematician Dr Ian Malcolm uses it to argue that living things cannot be fully controlled. In the story, the park's dinosaurs find a way to breed despite being engineered to be all female, proving his point about chaos theory. The quote quickly became one of the film's most repeated lines and later spread online as a reaction sound for moments of improbable survival or success. Its short length and instantly recognisable delivery keep it useful for memes, edits and commentary today.