Do you smile at strangers?

You pass people everyday that you don’t know. Do you smile at them or ignore them? I think it makes the world a friendlier place if, when you happen to make eye contact with someone, you smile. Sometimes you get a sour look in response, but mostly you get a smile back. The one place it did not get a positive reaction was in Russia. We learned that they think there is something wrong with you if you smile and say good morning when you don’t know someone. Maybe that’s changed in the 30 year since I’ve been there.