Well, I think you're hitting on something. 1. I think you're wrong about the lack of correlation and, as nickff points out, better math ability is correlated w

Well, I think you're hitting on something. 1. I think you're wrong about the lack of correlation and, as nickff points out, better math ability is correlated with higher income, but 2. Math ability does not affect income. Correlation is not causation. The better math ability is a side effect of higher income in my opinion, not vise-versa.