Basic Laws of Human Stupidity

This is an extract from the book Basic laws of human stupidity by Carlo Maria Cipolla (1922-2000). He was an italian historic specialized in Economic History. He worked in Italy and in U.S.A.
In this book he deals with the human stupidity and he divides the humans in four categories: the Helpless, the Intelligent, the Bandit and the Stupid.
I reccomend to everyone to read it.  ES IST ZU KRASS!!!

the X axis shows the benefits of your actions for yourself
the Y axis shows the benefits of your actions for other people


first Law:

Always and inevitably everyone underestimates the number of stupid individuals in circulation. 

second Law:

The probability that a certain person will be stupid is independent of any other characteristic of that person.

third Law:

A stupid person is a person who causes losses to another person or to a group of persons while himself deriving no gain and even possibly incurring losses.

fourth Law:

Non-stupid people always underestimate the damaging power of stupid individuals. In particular non-stupid people constantly forget that at all times and places and under any circumstances to deal and/or associate with stupid people always turns out to be a costly mistake. 

fifth Law:

A stupid person is the most dangerous type of person. 

The corollary of the fifth Law is that:

A stupid person is more dangerous than a bandit.