"...the former are legitimately strange and I can't fathom how they come to exist" I've come to believe that 10+% of any given population is insane (i.e. the f

"...the former are legitimately strange and I can't fathom how they come to exist" I've come to believe that 10+% of any given population is insane (i.e. the fringe). I find it true almost regardless of what defines the group: professionals, academics, regular folks, ...