People often assume that public figures who spread false information are just “liars.” Still, I think it’s more accurate and useful to realize there are at least five distinct and important types of misinformation spreaders: 1) Narcissistic deceivers: they don’t track or even consider whether what they are saying is true; they say what feels good to them. This relates to what philosophers call “bullshitting” (as opposed to “lying”). Some well-known politicians fall into this camp. 2) P...