This is:
by this:
People with children under 10 years of age should be banned from entering cafes, restaurants, public places, and generally on the street. Your child is your problem.

I don’t understand, among us there are aliens, who started off from their parents at the same time 20 years old, smart, educated and educated?

No is. But among us there is a huge number of outsiders who bring their grandchildren to the restaurant/café/bar, without having trouble explaining them the rules of conduct in a public institution. As a result, children are carried between tables, whipping the waiters, whispering, feeding and looking into the mouth of other visitors. And happy parents either look at them peacefully, or are too busy with each other and friends to notice that they are not alone in the institution. And on requests to calm the children - naive blinking of the eyes and "What will I do, they're kids!"