A chart showing what happens when two people, (1) and (2) do or don't mask. If (2) masks but not (1), it mainly benefits (1). If (1) masks but not (2), it mainly benefits (2). If both mask it benefits all
https://files.mastodon.social/media_attachments/files/113/200/214/025/915/954/original/9917ff988b5c80cc.png