Earlier quoted context omitted.
Yes there's something going on we don't understand, because some places that were hit very hard first time round are not seeing a second wave.
Perhaps the "something" is simply antibodies and herd immunity? 1. In April (!!), 1 in 5 NYCers tested positive for antibodies: https://www.nytimes.com/2020/04/23/nyregion/coronavirus-anti... 2. Given asymmetric social contact patterns, experts estimate that ~20% may be the threshold for herd immunity of COVID: https://theconversation.com/coronavirus-could-it-be-burning-... I support looking at the science, and this…
The good news is that even though we don't understand it, the NY experience does point towards a potentially more muted second wave in areas which were hit hard the first time round (as long as they take precautions at least), but we just don't know enough to be sure - anyone who is sure about the outcome at this point is probably overconfident and wrong.