 The Dinner Case serves as a putative counterexample to the Reflection Principle by allowing one to suspect that one will lose some memories. So it allows one to have a specific kind of epistemic self-doubt—to doubt one’s own ability to achieve or retain an epistemically favorable state. In fact, some are worried that the Reflection Principle is generally incompatible with epistemic self-doubt, which seems rational and permissible. For more on this worry, see the entry on  epistemic self-doubt.