Saturday was sunny and warm in Connecticut. I went out for a walk and saw a lot of people. Almost none were wearing masks. What were they thinking? At a homeowners association meeting in FL before I came North, a woman said she did not need to wear a mask because she is not infected. There are multiple ways such a comment could be interpreted but, to me, the salient point is, how does she know she is not infected? Incubation and the emergence of symptoms is typically five days after getting the virus. During those five days, a person can infect others. Masks are not to protect you, they are to protect others. If we all wear them, we are all more safe. Such a simple principle.