You are being told to wear the mask because it is supposed to protect you (or the other person, they cant decide which), and yet it clearly does not. Now you want to argue its XX% effective? That kind of argument can get you employment in the weather prediction business or government. People keep saying follow the science, well show us the science for Pete’s sake.
“You are being told to wear the mask because it is supposed to protect you (or the other person, they cant decide which), and yet it clearly does not.”
Actually, it’s not clear and I’ve looked into it. There is some minimal protection in hotspots, likely indoors.
I’m not a fan.