From Pegasus: In a now famous story, a pottery teacher divided his class into two groups. He told one group that their grade would be determined by the quality of their work no matter how many pieces they made. The second group would be measured not on the quality of their work, but on the quantity. The more pieces, the higher the grade. At the end of the semester, the results were clear. The group that had made the most pieces also had produced the highest quality work. Ironically, those students who were directly focused on quality were less able to produce quality. How come?