Timothy Patrick McCarthy admits that intervening and interjecting in discussions can be an “inelegant art.” If the goal is to have a student-led discussion, then the instructor should mostly let the conversation play out among students. But since the instructor has the end in mind, there are times when he/she should strategically interject to keep the discussion on track. In this video, McCarthy describes the typical pace of his student-led seminar and why he tends to interject more near the end of class.