Imagine that you, an expert in technology and in the learning sciences, have decided to help your colleagues pass on their expertise to others by helping them build intelligent tutors systems (ITSs). Your expert colleagues can be in only one place at a time, and an ITS would multiply the impact of their expertise better than an online video, since an ITS can personalize the instruction. ITSs have demonstrated significant learning gains in a variety of disciplines, after all (Anderson, 1989; Koedinger, 1997; Lesgold, Lajoie, Bunzo & Eggan, 1992; Ritter, Kulikowich, Lei, McGuire & Morgan, 2007; VanLehn, et al., 2005), so this approach makes sense.