Because these multiple goals compete with one another , we need a mechanism in place that signals, Hey, stop doing that thing and do something else." That mechanism, he suggests, could be fatigue.因为多个目标相互竞争占用我们的时间，而我们需要一个机制来发出信号，嘿，停止做那件事，去干点别的。”他认为，这种机制可能会让我们感到疲惫。