 A particular version of this view is held by J. Williamson (2010: ch. 4), who is so firmly an objective Bayesian that he argues that the Principle of Conditionalization should be rejected if it is in conflict with repeated applications of certain synchronic norms, such as Probabilism and the Principle of Maximum Entropy (which generalizes the Principle of Indifference; see  supplement D).  Time-slice Bayesianism as a general position is developed and defended by Hedden (2015a, 2015b).