saying that mask wearing for vaccinated folks is, still, a personal choice. i mean, that could change. place -- places like. ha l.a. going back to mask mandates, and people are really confused. what impact does this mask, sort of, whiplash having, ed? >> you know, i think it was always a mistake to think of these behaviors as being a matter of individual choice. no one's health is fully in their hands in a pandemic. these are infectious diseases, by their nature, they spread. so, my health is very much in your hands, too. and all of our choices are very much influenced by the society around us. whether people even have the option of keeping themselves safe to -- and at the expense of their own livelihoods. we should know better. people in public health should know better than to make this about a question of personal responsibility. i do think that, at a time when the delta variant is spreading so much, and when it is hitting