11 US government researchers have found that wearing two masks is more effective than one (www.cdc.gov) posted 3 years ago by wolfy 3 years ago by wolfy +12 / -1 18 comments share 18 comments share save hide report block hide replies
Let's say it is 0% effective. (Honestly I think it actually helps get the virus, and is in the negative % but I digress)
0% times 2 is still 0%.
So I guess they aren't wrong?