Paul Krugman gives us this taut definition in his newsletter today, in which he says we don’t have to make a decision as to whether Trump and Musk’s destruction is incompetent or evil. They are not mutually exclusive.
As he takes down Elon Musk by applying these two principles, he writes:
Musk is incompetent and evil. He suffers from billionaire brain — that special blend of ignorance and arrogance that occurs all too frequently in men who believe that their success in accumulating personal wealth means that they understand everything, no need to do any homework.