It's called "the law of gravity" for a reason. It has been tested and found to be true under every known or conceivable circumstance. It's no longer examined, except in Middle School science classes.
Studies of mask efficacy are ongoing, therefore, their utility is still in dispute.
That said, I've allowed myself to stray from my main concern, which is this: I don't care whether masks are effective or not. My concern is not the mask; it's the mandate.
As I've said before, if the utility of masks is so widely understood and accepted, then it ought to be no problem to use the legislative process to pass a temporary law requiring them in certain settings and situations. As long as We The People consent to the law via our elected representation, I'm fine with it. But that's not what's happening.
Leftist Governors and statist bureaucrats have used the the excuse of the pandemic to seize more power for themselves. They've issued edict after decree after directive. They've limited our movement, restricted our behavior, closed our businesses/schools/churches, harmed our children, drained our finances. and fundamentally altered the electoral process; all without any kind of legislative backing, or consent of the people, and while ignoring the restrictions themselves.
Meanwhile, they're still "working," still getting paid, still going out to eat, still getting haircuts, still not social distancing, and still NOT WEARING MASKS! But I'm expected to do what they say, not as they do.
The really scary part is the large number of people out there who are quite content to go along with it, and play the "Governor, May I?" game in the name of "the public good."
There's no such thing as the public good. We are a nation of individuals with competing needs, not a monolithic society. Even with the best of intentions, our government cannot possibly serve all individual needs. The only way to do that is for people to take care of themselves, and the only way to do that is let them be free to pursue their own motivations and their own solutions.
A mandate is not needed to wear a mask.