As previously noted, the motivational and satisfactional value of a reward system is a function of the perceived equity of the reward system.

the road traversed the face of the ridge as the right-of-way climbed the mountain

The turmoil went on—no rest, no peace. … It was nearly eleven o'clock now, and he strolled out again. In the little fair created by the costers' barrows the evening only seemed beginning; and the naphtha flares made one's eyes ache, the men's voices grated harshly, and the girls' faces saddened one.

Poka yoke emphasizes 100% inspections upstream for possible causes of defects, as well as rapid feedback and follow-up actions.