A study from Linkoping University in Sweden, published in the peer-reviewed journal European Sociological Review, has found that high-earning individuals do not necessarily have higher intelligence than those in lower-paying jobs.

Source: https://www.ctvnews.ca/canada/extreme-cold-deep-snow-for-western-canada-as-east-braces-for-ice-freezing-rain-1.6282376

Dave Ramsey, a financial expert, notes a surprising finding that schoolteachers, who mainly earn modest salaries, frequently accumulate more wealth than high-earning physicians.

Source: https://www.forbes.com/sites/dileeprao/2023/08/26/flash-v-substance-1-wealth-secret-of-unicorn-entrepreneurs-and-school-teachers/

It also these companies it had previously sued MLMs like Herbalife and Advocare for their promotions of high-earning potential even though most participants made little or no money.

Source: https://techcrunch.com/2023/01/23/the-ftc-fines-homeadvisor-up-to-7-2m-for-lying-about-lead-quality-and-other-matters/