There is also an assumption that if you are "intelligent" then you are intelligent at everything - this has not being my experience of knowing some really smart people. In fact, I actually that to do something really stupid requires a high degree of intelligence - largely down to sheer hubris.
It definitely is. The correlation between money and intelligence is very high.
Yeah, it is super clever to inherit money, or be born in the right place at the right time, or not being abused by alcoholic parents turning you chronically depressed, etc, etc. Please..
Just because the correlation isn't 100% doesn't mean it's 0.