the number one concern I've had with regards to face masks, above and beyond all else, has been the cognitive development of children growing up in these times. I'm no behavioral psychologist or whatever but surely concealing the facial expressions of adults and other children isn't going to be very good for young children passively learning how to intuitively emote and show emotion in facial expressions! I realized this when I was working retail earlier this year and recognized that I could no longer smile at small children while masked. I'm afraid that a lot of decisions made in the past couple years are going to have unforeseen nth-order effects that won't become fully apparent until later on.