The way I have always understood it, being smart isn't an extra above and beyond sort of thing(except for the truly gifted). It is avoiding all the possible wa

The way I have always understood it, being smart isn't an extra above and beyond sort of thing(except for the truly gifted). It is avoiding all the possible ways of being dumb: getting good nutrition, getting enough sleep, avoiding diseases, getting new and interesting experiences, etc. Also while IQ does correlate well with income in general After you get to a certain level not so much(think professors and engineers vs upper level management )