A PERFECT FAILURE
In 1995, a 44-year old man called McArthur Wheeler covered his face with lemon juice claiming that
he knew secrets about the power of lemon juice and he attempted to rob two banks in a row.
He wore no masks, no cover; just lemon juice. Though ridiculous it might seem,
Wheeler claimed the lemon juice could be used as an invisible ink; therefore,
it could make him invisible as well so that the security cameras would not be able to record him.
Surprisingly, he succeeded in robbing the banks; but contrary to his expectations,
the security cameras had recorded him flawlessly and the police could easily capture Wheeler within the same day.
Despite his extremely low level of general culture and poor knowledge of chemistry,
Wheeler was unaware of his ignorance and viewed himself as an expert.
For this reason, he could not believe that he was caught as he had thought he could easily eliminate the police and the advanced security technology with a perfect robbery plan.
This case drew the attention of two psychologists from the University of Cornell, Justin Kruger and David Dunning,
and they developed their theory stating that ignorant or unskilled people might have this illusion of confidence and never recognize their ignorance and therefore, they never accept their failures and mistakes and insist that their way is always correct; which we today know as the “Dunning-Kruger Syndrome”.