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With a focus on infrastructure and with stock prices in the single digits, the tone was more sober and serious than last year, but the audience no less ambitious. As usual, Esther Dyson held court on stage, curled up in an overstuffed armchair and posing her trademark obscure questions, and as a result, the conversation was all over the place. But a rousing, witty dialog on P2P raised the bar, and Jeff Bezos demonstrated once again why he's a survivor and a real leader in a good-humored closing chat. He let out his goofy guffaw, and the tone was set. He responds to total strangers by looking them in the eye and talking to them as if they were peers in the boardroom.