Abstract
I introduce definition by genus and specific difference, afterwards using it to show that Karl Jaspers rejected the classic criteria for pathologically falsified judgment: ‘Absolute conviction,’ ‘incorrigibility,’ and ‘impossibility of content.’ Next I draw attention to the primary experience of delusion. Famously, Jaspers reckoned that that experience was “ununderstandable”—usually taken to imply something negative about one’s ability to empathize with the delusion holder. All the same, I propose that it was actually our static mode of understanding that he felt was defeated by the aforementioned experience, not our genetic one.