Jerome Powell's game of Kerplunk

THERE is an old children’s game called Kerplunk. It is similar in concept to Jenga. Marbles are poured into a plastic tube through which sticks have been threaded. The players take it in turns to remove the sticks with the aim of avoiding the fall of marbles. The normal pattern is for a few marbles to drop until the unlucky player removes the strut that keeps up the rest. A noisy crash ensues. Jerome Powell (pictured), the new chairman of the Federal Reserve, may be that unlucky player. Janet Yellen,…