An entry in the New York Times Magazine’s annual Year in Ideas issue tackled the “reputational stigma” that penalizes people over 45 in today’s brutal job market. When economists pitted “seniors” (over 50) against “juniors” (under 30) in a set of decision-making tasks, the older group proved only “very slightly less” competitive. They also cooperated better, leading to the welcome conclusion that the ideal workforce consists of workers of all ages.