Not necessarily. Some of the most brilliant and hardworking people I know have a background that is anything but "high social class". They are like that becaus

Not necessarily. Some of the most brilliant and hardworking people I know have a background that is anything but "high social class". They are like that because they have something to aspire to. Meanwhile high social class people I've met are generally dependable, but that's about it. Perhaps because they never had an incentive to think outside the box.