"Precisely," Vanna said. "Deep Vanna is the understanding that risk is rarely a straight line. It is a curve living on a curve. When you ignore the second-order effects—the way delta morphs as volatility shifts—you are blind to the feedback loop."
"Imagine the market is a river," Vanna began, her voice low and rhythmic. "You are standing on a raft. Your Delta is the current pushing you downstream. You know how to lean against the current to stay still. That is your hedge." deeper vanna