What does “der Flügelschlag eines Schmetterlings” mean in German?

Asked if he would change anything in his life, Marco Rima says no: one different choice and his whole path would lead somewhere else. To picture this he reaches for “der Flügelschlag eines Schmetterlings” — the wingbeat of a butterfly. Germans use it the way English uses “the butterfly effect”: something this small can tip everything, and “eine Sekunde später” your life is telling a new story. He means it warmly, not as regret.

He says: “Eigentlich ist es immer so wie der Flügelschlag eines Schmetterlings. Eine Sekunde später, dein Leben erzählt eine neue Geschichte.” — “Really it’s always like the wingbeat of a butterfly. One second later, your life is telling a new story.” (He stutters briefly in the clip; the clean phrase is “der Flügelschlag eines Schmetterlings.”) “Flügel” = wing, “Schlag” = beat/stroke, so “Flügelschlag” = one beat of a wing. Germans use it the way English uses “the butterfly effect” — a tiny cause with huge results. Examples: - “Manchmal reicht ein Flügelschlag eines Schmetterlings, und alles ändert sich.” — Sometimes one wingbeat of a butterfly is enough, and everything changes. - “Diese kleine Entscheidung war der Flügelschlag, der alles veränderte.” — That small decision was the wingbeat that changed everything. Usage notes: It is a picture, not a fixed phrase, so people often shorten it to just “ein Flügelschlag” once the image is clear. It usually carries a soft, almost hopeful feeling — small things matter — rather than blame.