Yeah, or the idea that maybe helmets in gridiron football increase CTE.

I see the possibility, but my own anecdotal experience with mask wearers and non-wearers jives with the other correlation: that non-wearers generally didn’t take the pandemic seriously.

The people that I know who shunned masks also ignored the COVID threat in other ways: Large gatherings, vacations to another state to escape lockdown restrictions, etc.

Whereas my religiously-masked friends were basically isolated last year.

And because I have several such anecdotes, I now have data :)