 What of the evidential proportionalist? Here it is a little more difficult. There are principles that the evidential proportionalist will take to govern evidential support that go beyond merely Probabilism, which is a relatively weak and undemanding principle. So it is not sufficient to point to the accuracy argument for that principle in the way we did in response to the coherentist. However, here is an attempt at an answer. It comes from collecting together a series of accuracy arguments for other principles of rationality that we take to govern our credences. For instance, Greaves &amp; Wallace (2006) and Briggs &amp; Pettigrew (2018) give an accuracy argument for the principle of conditionalization, which says that, if an agent is rational, her credence function at a later time will be obtained from her credence function at an earlier time by conditionalizing on the total evidence she obtains between those two times; Easwaran (2013) and Huttegger (2013) extend the argument, and Schoenfield (2016) and Carr (2019) clarify the norm that it establishes. Moreover, Pettigrew (2013a) gives an accuracy argument for the Principal Principle, which says that, if an agent is rational, her credences in propositions concerning the objective chances will relate to propositions to which those chances attach in a particular way. Pettigrew (2014b) and Konek (2016) give rather different accuracy-based arguments for the Principle of Indifference, which says how a rational agent with no evidence will distribute their credences. Moss (2011), Lam (2013), and Levinstein (2015) describe principles that rational agents will obey in the presence of peer disagreement and provide accuracy-based arguments in their favour. And finally Horowitz (2014) uses accuracy-based arguments to evaluate various species of permissivism. The point is that, piece by piece, the principles that are taken to govern the degree of support provided to a proposition by a body of evidence are being shown to follow from accuracy considerations alone. This, it seems, constitutes a response to the concerns of the evidential proportionalist.