And that is the main thing: socialization. Families in cities, specially now that most people rarely have more than 3 children and live relatively far from gran

And that is the main thing: socialization. Families in cities, specially now that most people rarely have more than 3 children and live relatively far from grandparents, the cost of not understanding how to behave with mid size groups of people or how to read social contexts is priceless, and most probably won't come easily from other channels since now doesn't seem that common to see children running in the streets freely.