 The ought-to-be construal of Probabilism still leaves us a prescriptive issue: How should a person go about detecting and fixing the incoherence of one’s credences, noting that it is absurd to strive for coherence at all costs? This is an issue about ought-to-do/prescriptive norms, addressed by a prescriptive research program in an area of psychology called judgment and decision making. For a survey of that area, see Baron (2004, 2012) and Elqayam &amp; Evans (2013). In fact, many psychologists even think that, for better or worse, this prescriptive program has become the “new paradigm” in the psychology of reasoning; for references, see Elqayam &amp; Over (2013).