Facemasks. The argument that they aren't effective under medical scientific study is irrelevant to those who mandated them. They care not about this or any study applying the natural sciences. That wasn't ever their point or their claim of efficacy.

They just said they were scientifically proven to be safe and effective, the "best science," called for by experts. Knowing that most people would assume they were talking about medical science, natural science.

But therein lies their cleverness. Hiding in the ambiguity of the word, "science," in plain sight. They meant a different type of science. Behavioral Science. The science of propaganda, symbols, psychological appeals that manipulate perceptions. "Oh, there must be an invisible danger in the air around me! I must be careful. It's super scary. All of these people I see wearing masks remind me." And not seeing a person's face is kind of frightening, like masked hijackers and bank robbers. Fear amplification. Aka, terrorizing. But claimed to be the best behavioral science-based non-pharmaceutical intervention. To fix people from their ignorant "optimism bias" that makes them think there's nothing to fear.

Behavioral Science. Aka the Science of Totalitarianism. That's what claims of mask efficacy were based on. Deceptively concealed in the ambiguity of the word, 'science.' A pseudoscience. And citing any medical science that disproves their medical efficacy is summarily ignored by those who impose them. With smug dismissal of the ignorant masses who fixate on the wrong type of science the more sophisticated and educated elite mean. As Obama's spokesperson said about his unmasked birthday party attendees when the masses and servant class were told to mask up.