When my son, Trent, was a teenager, I asked him to rake pine needles out of a rock bed in the front yard. He did a good job, but a couple of times I had to urge him to give a little more effort. Trent often declared a task “good enough” a bit too soon.
My younger son, Troy, faced a different problem. He was so meticulous, he might have kept on raking pine needles until he’d picked up every last one in the neighborhood.