In 1999, while sitting at a bus stop in Cuernavaca, Mexico, a Czech physicist named Petr Šeba noticed young men handing slips of paper to the bus drivers in exchange for cash. It wasn’t organized ...
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During family dinner, we have a tradition. Everyone has to summarize their day by describing three good events and, if necessary, one bad event. When my turn arrived at a recent dinner, I turned to my ...
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