Busy work
(重定向自BusyWork)
Busy work (also referred to as make-work and busywork) can refer to activity that is undertaken to pass time and stay busy but in and of itself has no actual value. In educational settings, busy work has precedence as a means to corroborate and reinforce lessons and curricula by allowing students time to practice newly learned skill-sets independently. Busy work also occurs in business, military and other settings, in situations where people may be required to be present but may lack the opportunities, skills or need to do something more productive. People may engage in busy work to maintain an appearance of activity, in order to avoid criticism of being inactive or idle.