What&#x27;s amusing is that Bayesian reasoning is what human beings do all the time.  Most of the -isms that people can do (racism, sexism, ageism, etc) have to do with taking the prior (what already I know about other similar people) and applying that knowledge to the new person.  It&#x27;s &quot;too hard to understand&quot; and yet all kinds of people are doing it every day.