Sometimes you are unreliable at fulfilling your doxastic plans: for example, if you plan to be fully confident in all truths, probably you will end up being fully confident in some falsehoods by mistake. In some cases, there is information that plays the classical role of evidence—your beliefs are perfectly discriminating with respect to some possible facts about the world—and there is a standard expected-accuracy-based justification for planning to conditionalize on this evidence. This planning-oriented justification extends to some cases where you do not have transparent evidence, in the sense that your beliefs are not perfectly discriminating with respect to any non-trivial facts. In other cases, accuracy considerations do not tell you to plan to conditionalize on any information at all, but rather to plan to follow a different updating rule. Even in the absence of evidence, accuracy considerations can guide your doxastic plan.

中文翻译：

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没有证据就更新

有时你在实现你的信念计划方面并不可靠：例如，如果你计划对所有真理充满信心，那么你可能最终会错误地对某些谎言充满信心。在某些情况下，有一些信息扮演着证据的经典角色——你的信念对于世界上一些可能的事实是完全有区别的——并且有一个标准的基于预期准确性的理由来计划条件化就这个证据而言。这种以计划为导向的理由延伸到一些你没有透明证据的情况，从某种意义上说，你的信念对于任何重要的事实都没有完全区分。在其他情况下，准确性考虑并不告诉您计划以任何信息为条件，而是计划遵循不同的更新规则。即使没有证据，准确性方面的考虑也可以指导你的信念计划。