The most interesting phenomenon I noticed was how unquestionably loyal many places were to the mask mandates, yet kept all their windows shut even on totally nice days out.

I was in a gym that required everyone to wear a mask (yes, while working out / on a treadmill / etc), but all the large windows were shut, and nobody seemed to care or notice. No staff, no patrons, nobody. So I walked around and opened all the windows. And this wasn't March 2020. This was like end of 2021.

I'm not claiming to be some pandemic savant, nor getting into a mask debate, but what shocked me was the "group psychosis" on masking at the expense of proven and incredibly easy mitigation efforts like opening windows!