A talk isn’t a container or a bin that you put content in, it’s a process, a trajectory. The goal is to take the listener from where he is to someplace new. That means trying to make the sequence so stepwise that no one gets lost along the way. Not to be grandiose, but if you could fly and you wanted someone to fly with you, you would take their hand and take off and not let go, because once the person drops, that’s it! I rehearsed in front of friends and acquaintances who knew nothing about the topic, asking them where they were puzzled or what they wondered about, hoping that by filling
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