Research shows that rich does not = smart. Interesting association between cognitive ability and annual income. The borderline is an annual income of 7.5 million yen.
【Research shows that rich people are not necessarily smarter】 https://gigazine.net/news/20230207-cognitive-ability-top-earners/ ・In this study, the subjects were 670,203 citizens between the ages of 18 and 60 who held some kind of job between 1991...