Good advice. And as you already suggest: apply it by being genuine. Most people sense fake personas.
Different approach I once stumbled on by accident: during the intro walk right off the raised podium, falling flat on your face.
Then say: "ok.. that hurt.. and I see blood.. but I'm honestly going to fulfil a lifelong dream here by asking my question: is there a doctor in the room?"
Perfect icebreaker.
(I was in a hospital giving a talk on electrical safety to medical doctors)
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