english: So, for example, I was giving this talk recently in New York City, and I said, "You know when you're on the subway and the other person across the subway car smiles at you, and you just instinctively smile back?"
non_english: Napríklad, keď som mal nedávno túto prednášku v New Yorku, povedal som: "Poznáte to, idete metrom a osoba sediaca oproti vám sa na vás usmeje. Vy sa inštinktívne usmejete tiež."