Law 2: The probability that a certain person be stupid is independent of any other characteristic of that person.
Carlo Cipolla, The Basic Laws of Human Stupidity
Stupid people are everywhere. Cipolla believes that stupidity exists indiscriminately across all human groups and is uniformly distributed in equal proportion.
There is an equal proportion of stupid people between developed and developing countries. There is an equal proportion of stupid people among businesspeople and academics, and among white-collar and blue-collar employees.