i have thought about it for years, why are some areas of cities destitute and why is poverty so rampant in those areas, i dont think anybody would expose their families willingly to these neighborhoods so if that is the case they how and why do they end up there, the schools are sub par , the grocery stores and so on, their is no chance for them to migrate upward through contacts, so they in turn create their own caste with its own rules ,language , dress code . it s very odd to me to realize that this may not be a mistake or just an occurence but more of a social engineering phenomenon that nobody ever really looked at.