And each of those small tasks is a boulder that needs to go up and over the mountain. And there's no satisfaction for handling boulder #1, because boulder #2 has been looming the whole time. And so on. And when all of the boulders have finally been moved, the next mountain is right there. It's different than the first mountain, and all of the boulders are different. Each boulder and mountain takes more and more energy. There's no end. No reward for finishing. Just boulders all the way down. Or up, in this case.