" We discovered this when we invited the Nobel laureate Daniel Kahneman to TED. Known as the father of behavioral economics, he’s an extraordinary thinker with a toolkit of ideas that can change any worldview. We had originally asked him to speak in the traditional TED way. No lectern. Just stand on the stage, with some note cards if need be, and give the talk. But in rehearsal, it was clear that he was uncomfortable. He hadn’t been able to fully memorize the talk and so kept pausing and glancing down awkwardly to catch himself up. Finally I said to him, “Danny, you’ve given thousands of talks in your time. How are you most comfortable speaking?” He said he liked to put his computer on a lectern so that he could refer to his notes more readily. We tried that, and he relaxed immediately. But he was also looking down at the screen a little too much. The deal we struck was to give him the lectern in return for looking out at the audience as much as he could. And that’s exactly what he did. His excellent talk did not come across as a recited or read speech at all. It felt connected. And he said everything he wanted to say, with no awkwardness. "
― Chris J. Anderson , TED Talks: The Official TED Guide to Public Speaking