I do know the difference. I’m just tired of hearing people say masks are ineffective when it’s actually much of the general public who doesn’t know wtf they are doing when wearing a mask.
An example - I watched a woman at Crest trying to open a plastic bag for her produce. She was having a problem getting the bag to open. Her solution was to pull down the mask and lick her fingers to aid in getting the bag open, and then pull the mask back up.