The banners at Agincourt were a clever trick—massive flags made the French think the English were massed and ready to charge, while the real numbers were spread thin. That misdirection left the French overconfident and exposed. Then the English slipped around the flank, turning a cramped position into a decisive advantage. In any negotiation, that’s pure play: create a false impression, keep your true intentions hidden, then strike at the moment the other side is least prepared. Keep your cards close, let them focus on the spectacle, and when the moment arrives, you win the deal with minimal friction.