It turns out that the three biological factors that drive job performance and innovation are social intelligence, fear response, and perception. Public speaking brings all three together. Speaking to a group requires social intelligence. We need to be able to make an emotional connection with people, talk about what they are interested in, and persuade them. That’s difficult, and we’re not wired for this as well as we are wired to, say, eat fried foods. Public speaking also triggers huge fear responses. We’re surrounded by strangers or people of power, all of whom might harm us. Attention is
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