Edison's real contribution here isn't cheerleading persistence—it's identifying *surrender* as the active choice we make, not merely the absence of trying. Notice he doesn't say "work harder" or "believe in yourself," but rather points to that specific moment when we stop, when we decide the next attempt isn't worth the trouble. What makes this particular, and harder to dismiss, is the arithmetic of it: one more time. Not ten times, not until you're exhausted, but this singular increment—the kind of manageable promise that feels less like religious faith and more like a neighbor suggesting you stay for one more cup of coffee. A struggling student who's failed an exam three times might ignore a poster about never giving up, but "try this question one more time before bed" is something her hands can actually do.