A few years back, I sat through a sprint review where a product manager and a senior developer spent twenty minutes arguing about one line in a ticket: "Users can reset their password." The developer had built exactly that. The PM expected a lockout after three failed attempts, an email confirmation, and a link that expired in an hour. Nobody was wrong, exactly. They just had two different pictures in their heads, and the ticket never forced anyone to draw theirs on paper.That gap between what people say and what they mean is why behavior-driven development exists. And it is also why picking a BDD tool is less about features and more about how your team talks.