But when it comes to something as medically severe as psychopathy isn&#x27;t it the whole point that it shouldn&#x27;t matter what you, or me, or any layperson thinks?<p>If you already don&#x27;t like this coworker because of disagreements and actions at work, you&#x27;re very likely to overestimate these symptoms, or believe that someone who is only a little ways along the spectrum to psychopath is actually much further.<p>Imagine if we believed everyone who went through a bad breakup or divorce and called their ex partner a psychopath out of anger (even justified anger). It just seems really extreme to use some armchair diagnosis from someone emotionally invested in believing bad things about the other person.