Some of the best hackers &| hustlers I know come from average to slightly-below average backgrounds. The biggest challenge for anyone, given any background, is what they tell themselves they can't do.
In addition to talking, it's important that the parent is a decent human-being. An awful person interacting with a kid probably does more harm than good. I don't think there's much correlation with decency and socioeconomics.
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"Give me guys that are poor, smart, and hungry and no feelings." - Gordon Gekko