TED】ヨッヘン・ウェグナー。何千人もの見知らぬ人をペアにして政治を語るときに何が起こったのか (What happened when we paired up of thousands of strangers to talk politics | ヨッヘン・ウェグナー) (【TED】Jochen Wegner: What happened when we paired up thousands of strangers to talk politics (What happened when we p