 Confidence that irrationality defines mental disorder is similarly eroded if, understood as effective social function and personal flourishing, mental health lies in traits such as unwarranted optimism, and the distorting tendency to emphasize, and remember, success over failure experiences in “positive illusions”(Taylor &amp; Brown 1988; McKay &amp; Dennett 2009; Jefferson et al. 2017). Along these lines, some illusions, delusions, and hallucinations have recently been acknowledged 