A few days ago, Paris had a rare snowstorm. Blanketed with snowflakes, the City of Lights turned into a muffled, dazzling landscape. The Eiffel Tower, laced in ice, closed because of the treacherous weather. Meteo-France, the national weather agency, issued a winter-weather advisory. Slippery streets, power failure, phone outages. Quelle horreur. But Paris being Paris,...