In a modern city, the population density is such that no matter where you live, what you do, whoever you work, you always interfere with someone.
= is
and Nihua. Must be minimized. There are simple rules.
Are you walking on the left side of the sidewalk against the stream? Sooner or later you will get a shoulder. Right movement in us.
Do you stretch your legs through something? Sooner or later they will be right.
Do you like to stop fast on the move? Someday there will be a two-foot two-hundred-pound uncle behind him, who will not have time.
Do you like to smoke people? One day the uncle will be there.

It’s crazy, it’s not treated. It is stopped by purely physical means.