 Jeffrey’s model is restricted in two ways. First, it requires an unchanging evaluative function \(u\) defined over the atoms of the propositional space, viz. possible worlds. Thus for all doxastically changed preference orderings, the preferences over worlds remain identical. Second, the model only considers the effects of a belief change to certainty. But it is plausible that one’s preference – say, for a vacation in Florida – changes just because one believes that it is more likely that there will be a hurricane next week. Jeffrey’s model can be generalised by introducing a more general probability updating rule (e.g., Jeffrey conditionalisation). An alternative solution was proposed by Bradley (2005). It is based on relatively strong assumptions on the relation between prior and posterior unconditional preferences.