Prior to the treatment, he would rarely approach his teacher or engage in cooperative play. However, when we redirected his stereotypy, he started to look towards his teacher. He engaged in a variety of new responses with the toys he had access to, and within a short period of time, he brought the toys to his teacher, sat on her lap, and played with her. Sometimes it is better to interrupt preferred behavior to establish other important skills. That said, given that stereotypy is typically harmless, there should be a time and place for it because everyone should be able to eat donuts and take a nap.