I think for the pre-vaccine period, there's at least a couple issues that are still very unclear: - how well did official policies map to actual behavior? I ex

I think for the pre-vaccine period, there's at least a couple issues that are still very unclear: - how well did official policies map to actual behavior? I expect a lot of people still masked and distanced, regardless of what their particular state's policies were - what specific behaviors actually made a difference? (Well, maybe it's really just a question of how much difference masking made -- I'd expect it's pretty clear that avoiding other people was pretty effective) So for me, a more interesting and, I'd argue, practical question, is really about how effective _policy_ is. There were definitely a lot of costs, as it helped politicize things (who would have guess masks would become a partisan issue?). I think of the case of Sweden, for example, where IIUC behavior was pretty cautious although policy was pretty loose.