Its is scientifically true that incompetent people think that they are more competent than the rest of the population.
19th of April 1995 an American man robbed 2 banks in Pittsburgh. He did not wear a mask and the robbery took place in full daylight.
Two cameras had very clear pictures of the robber. The pictures were shown on the news the same evening and shortly afterwards the robber was arrested.
The robber was most surprised. He knew that lemon juice was used as invisible ink and had reached the conclusion that if he smeared lemon juice all over his face it would make him invisible to the cameras!