This is an important article to read:
“… the fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.”
—Bertrand Russel (1872-1970)
The article goes on:
But what exactly is stupidity? David Krakauer, the President of the Santa Fe Institute, told interviewer Steve Paulson, for Nautilus, stupidity is not simply the opposite of intelligence. “Stupidity is using a rule where adding more data doesn’t improve your chances of getting [a problem] right,” Krakauer said. “In fact, it makes it more likely you’ll get it wrong.” Intelligence, on the other hand, is using a rule that allows you to solve complex problems with simple, elegant solutions. “Stupidity is a very interesting class of phenomena in human history, and it has to do with rule systems that have made it harder for us to arrive at the truth,
—Nautilus
