Cathie Wood says AI's biggest payoff won't come from chatbots or robots but from healthcare — the market's "sleeper" opportunity. Cathie Wood says AI's biggest payoff won't come from chatbots or robots but from healthcare — the market's "sleeper" opportunity. "The most profound application of AI is in healthcare," Wood said in a discussion posted Tuesday. Related stories Business Insider tells the innovative stories you want to know Business Insider tells the innovative stories you want to knowWood did not respond to a request for comment from Business Insider. Earlier this year, Microsoft said its medical AI system diagnosed cases more accurately than human doctors by a wide margin in a study.