I&#x27;m surprised so many people during the last days have said stuff like this here on HN, i.e. that these things have something to do with mental illness.<p>Do people really know this little about what mental illness (in this case psychopathy or schizophrenia) actually is?<p>I also thought it was widely known that very little is needed for people to be able to act abhorrently towards someone they identify as somehow other than themselves (e.g. sociological out-group, &quot;otherization&quot;).