Definition of idiot!

I came across the following definition of stupidity! and I think I have been in many occasions idoit!:)

The term IDIOT was used based on the definition of stupidity derived from a book called “Story of Stupidity: A History of Western Idiocy from the Days of Greece to the Present”. According to James F. Welles, the author and researcher, stupidity is the act of repeating an action while expecting a certain result and obtaining the opposite.