When you make a split decision about which line of cars to pull behind at a tollbooth or which line of carts to stand behind at the grocery store, chances are some other line will move more quickly.

• 当你左右为难，很难决定把车开到哪一排道路收费站台队伍后面，或将购物车推到哪列收费台队伍后面的时候，又有另外的队肯能前进更快。