The Basic Laws of Human Stupidity

In 1976, Carlo Cipolla published a research and text about the greatest threat to human existence...

Stupidity.

He wrote "The Basic Laws of Human Stupidity"

1. Always and inevitably, everyone underestimates the number of stupid individuals in circulation.
2. The probability that a certain person (will) be stupid is independent of any other characteristic of that person.
3. 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.
4. 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.
5. A stupid person is the most dangerous type of person.

Why am I writing this here?

Maybe you should read the laws again...

Note: yes, sometimes I'm stupid myself. Sometimes I'm an idiot that didn't know better. But, opposed to the people these laws talk about, I learn from my stupidity and don't repeat the same mistakes.