Masks and Exposure Science

Plastic tubes and pots and pans
Bits and pieces and
Magic from the hand
--Oingo Bingo

Insightful video divided into six segments that discusses scientific issues related to universal masking. The narrator is an industrial hygienist who understands theory and associated research that apply to practical masking situations.

He puts many useful concepts to work, including the hierarchy of controls employed to mitigate health and safety risk (of which personal protective equipment such as masks constitutes the final and least effective of all levels), and the hierarchy of evidence (of which anecdotal evidence and expert opinion--those sources that public health officials have emphasized most to justify their policies, constitute the lowest quality evidential source).

After watching this series, only the ignorant or partisan would fail to question the pseudo-science that has been manipulated to support prevailing public health policy.