No test measures intelligence. A test only measures you relative to the persons that wrote the test. – loosely quoting Asimov.
2007 is ancient history now. It is an interesting graph that one might correlate with a lack of meritocratic structure in society, but I’m on the low end cause I say this without looking up and reading the study. Pretty pictures evoke emotional blabbering bias and all that.
I know you want to complain about unethical billionaires but the point here is about looking for a trend between ethics and income, not prevalence of unethical behaviour amongst billionaires
No the trend was about unethical behavior and billionaires, not income. And that trend is close to 100%.