I mean, it helped teach me. It’s not that I didn’t actually understand it before, it’s that I hadn’t internalized it (and how selfish it is to go around getting other people sick). My dad is one of the “I never take a sick day!” people and when you hear that enough as a kid, the “merit” of that sticks in your bones. It took me several years as an adult to really believe that I wasn’t selfish or lazy if I took a sick day.