Saying Hello To A Stranger Can Change Your Day

If you’ve ever been on a subway or public bus, you know the rules. Don’t make eye contact, stay as far away from other people as the space allows, and for the love of God, don’t talk to anyone. But what if the rules are wrong?

The behavioral scientists Nicholas Epley and Juliana Schroeder approached commuters in a Chicago area train station and asked them to break the rules.