David Dunning is a Cornell University professor who is perhaps most famous for a paper he co-wrote about ignorance and over-confidence. The Dunning-Kruger effect refers to people who are novice or ignorant to things
they do not know but believe they are experts. The best example involves people who take a test on a subject they know very little about and receive a low score while believing they should receive a high score.
This effect has been studied and linked to many situations, but it can be a serious danger when it occurs in maintenance practices. Around the world, good maintenance practices have been poorly taught and communicated, and some ideas are unsafe and have no foundation in practicality. Still, they are handed down as the standard operating practice. This can have worse consequences than most Dunning-Kruger effects—it could be life-threatening.
Read the entire article here.