July 20. You should always say under what circumstances you would change your mind. I am tempted to say I would start wearing the mask again if it became clear that my vaccination protects others less than the mask. In other words, if the vaccination factor dropped from over ten to under four. But I have often found the masks unnecessary even when there was no vaccination. For example, outdoors, at night, alone. So all I come out with is that I will do whatever is asked of me, wherever it is asked. I will always interpret it permissively – if the cashier at the store doesn’t wear a mask, I won’t either. If people start flouting the mask requirement in the subway, I’ll go along with it. Public edicts, habit, social pressure, those are the factors.