Now, none of us can do everything well, but we’ve all met people...

Now, none of us can do everything well, but we’ve all met people who, even well outside of the contexts of drugs or driving, simply cannot grasp the full extent of how much they can’t do well. “The problem with people like this is that they are so stupid,” explains Monty Python’s John Cleese, “they have no idea how stupid they are.” "In order to know how good you are at something requires exactly the same skills as it does to be good at that thing in the first place,” Cleese elaborates, “which means — and this is terribly funny — that if you are absolutely no good at something at all, then you lack exactly the skills you need to know that you are absolutely no good at it.” With that, he gives us an extremely brief introduction to the Dunning–Kruger effect, “a cognitive bias wherein unskilled individuals suffer from illusory superiority, mistakenly rating their ability much higher than is accurate” owing to “a metacognitive inability of the unskilled to recognize their ineptitude”