In a recent article, Director makes the case that many individuals with bipolar disorder have the capacity to consent to many decisions while acutely manic, even when those decisions are out of character and cause harm. Referring to recent qualitative evidence, I argue that Director overlooks a key mechanism of manic incapacity, an inflexible experience of the future that impairs one’s ability to value. Without attention to the illness-specific experience of decision-making, capacity assessments risk false negatives in people with mania.