Comments on the article by T. J. G. Tracey et al. (see record 2013-45602-001), which addressed the question of whether "psychotherapy is a profession without any expertise." In the past two decades, new insights have emerged on expertise in various domains, including psychotherapy. In particular, the present authors have developed a general, relativistic perspective on expertise that invokes performance-based criteria (Weiss & Shanteau, 2003, 2014). In this commentary, they highlight three distinctions that have emerged from recent research on expertise.