"Listeners cannot absorb too much information at once. Talks should be limited to getting across just a few critical points. The goal is to get the listener interested enough to explore the subject in more depth on their own, perhaps by reading, perhaps by conversation. If too much is packed into a talk, the listener becomes overloaded and is apt to remember less than if the talk were better paced with less information. Worse, the listener may simply give up and cease following. Perhaps even worse is that listeners might get interested and pause to pursue some implications mentally, only later to discover that they thereby missed other material."
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