It’s a fact: negotiation can’t be scripted. That’s true whether you’re negotiating a mega-deal or buying a used car. Whatever the context, you can’t dictate what your counterpart is going to do or say any more than you’d let them dominate you. Successful negotiation thus requires strategic agility and being nimble moment to moment, so you can adjust and adapt as the process unfolds. Challenging the static model of standard win-win and hardball approaches, Harvard Business School professor Michael Wheeler demonstrates the practical art of improvising an agreement.