I am standing on a wide stage with lights so glaringly bright the crowd behind them is almost unnoticeable. My laptop is already set up with my presentation, but, for now, the projection behind me read only “TED” and, under that “Ideas Worth Spreading”. I adjust the microphone, hands shaking almost too much to use. I swallow hard and finally open my mouth to speak. “Good afternoon, everyone.” My voice sounds wobbly, even to my own ears. “My name is...