does genetics play a role here? What if poor family are likely to remain poor while rich family are likely to remain rich? Like maybe poor family aren\'t as smart as rich family in general, so they are more likely to be poor.
Even the way poor and not so smart family might raise their kids improperly, and the kids would grow up to be poor, and work on low income jobs. Then when they have kids their own, the pattern continues and less likely to have a kid that would be successful and become rich than the middle class or the upper class kids. Part of it has to do with the way the kids were raised, and genetics might play a role on intelligent too.