If someone said, look at your photos when you were young, you can see your future. Is this really the case? Two psychology institutes in the United States and Britain have conducted special research on graduation photos. They collected 5000 graduation photos of the whole class in junior high school and senior high school, from which 50000 people were identified. After 41 years of follow-up investigation, the researchers found that: on the whole, those students with friendly smiles and confide...