By now pretty much everyone must have heard about the academic who was taken off a plane and questioned by authorities because the passenger seated next to him while the plane was waiting to be cleared for takeoff had alerted the authorities that he was behaving suspiciously, concentrating on writing strange symbols on a piece of paper and rebuffing her attempts at conversation as she tried to find out what he was up to. It did not help that he was youngish, swarthy looking, and bearded.
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