I discuss the work of the Boston Change Process Study Group, focusing on the paper in this issue of Psychoanalytic Dialogues, but also addressing broader issues across the range of their work. After describing the considerable similarities between their views and mine, I focus on three areas about which I have questions: the concept and clinical use of mutual enactment, BCPSG's use of nonlinear dynamic systems theory, and certain problems revolving around science and social construction.