Well I must not be that smart as I failed in writing a simple paragraph in my native language that would convey that a lot of people give their opinion about subjects that they have not studied. Americans are famous for that, if fact we have an expression "Opinions are like Azzh..es, everybody has one." Using "hoi polloi" was an attempt at gentle humour, as I am a life-long member of that group. Regret not getting that across.