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‘A recent Stanford study released by the NCBI, which is under the National Institutes of Health, showed that masks do absolutely nothing to help prevent the spread of COVID-19 and their use is even harmful.’

and the mask loving amen corner here on FR are most incensed and offended, and have taken great pains to bash both the study and the author (a glorified gym teacher, some poster called him yesterday)...

This is a bunch of BS. In one breath the author states that a mask is unable to stop the spread of a virus because the fibers are too far apart and the virus is so small. In the next breath he states that a mask somehow prevents the free travel of carbon dioxide and Oxygen molecules which are even smaller than a virus so...which is it?

The author ignores the fact that masks are comprised of multiple layers of fibers, not individual layers. It's not like throwing a golf ball at a chain link fence, it's like throwing a golf ball at a hundred layers of chain link fence. And, for that matter, the virus is transmitted via droplets that are more like the size of a baseball being thrown at a hundred layers of chain link fence.

And; furthermore, multiple studies have shown that facemasks do not, in fact, cause hypercapnia or hypoxia. Here's one that's so clear, even a caveman can understand it. De. Bunked.

Here are multiple videos demonstrating that facemasks do, in fact, reduce the transmission speed, distance and "hang time" of droplets.

Schlieren Imaging mask vs no mask

Mask no mask petri dish experiments

Laser imaging of droplet emission through no mask vs various styles of masks

Then the author cites the following study as evidence that wearing facemasks is pointless: 26) Leung N.H.L., Chu D.K.W., Shiu E.Y.C., Chan K.H., McDevitt J.J., Hau B.J.P. Respiratory virus shedding in exhaled breath and efficacy of face masks

This is the actual conclusion of that particular study stated:

This isn't even a study. It's straight up BS.