News flash: you don't need one indoors, either. Pretty soon, it will be face masks required to go outside your home. Yeah, that's freedom, eh? Looking forward to everyone walking around like a bunch of gimps on the 4th of July, convincing themselves that they're "free".
‘Looking forward to everyone walking around like a bunch of gimps on the 4th of July, convincing themselves that they’re “free”.’
not I; I already look gimpy enough without a mask...not wearing one as soon as my county goes yellow...
It's useful indoors when people are talking, singing, etc. There are well-documented super-spreading events for people spending a few hours together. When it is not useful is casual contact, 10 minutes or less.