With Starbucks stock plummeting – it lost half its value in the past 15 months – C.E.O. Howard Schultz spent yesterday reassuring thousands of anxious shareholders that everything would soon be right as rain, once some new changes “restore an authentic coffeehouse experience to the company’s stores,” as the Times puts it. It’s fun to watch corporations trying to “restore” authenticity, like when elderly bluebloods try dressing “casually” in their creased blue jeans. The behemoth......