If we can find what works for treatment, and only isolate the most vulnerable, that’s the best path forward to re-open the economy in the absence of a vaccine.
[Update a while later]
Time to dump epidemic models? All models are wrong, some are useful, but it’s not clear that these have been, though they’ve certainly been used to implement policies that a lot of people wanted to implement before the pandemic.
Has it been here (at least in the Bay Area) a lot longer than we thought? I think it’s quite plausible that it was here in December, which in a sense is good news, because it probably means we already have a lot more herd immunity than we thought, and the fatality rate is much lower than earlier fears.
As the thread points out, you could just do one test per household, on the assumption that if one is infected, all are or will be. Hope the CDC/White House are aware of this thinking, because it makes a hell of a lot of sense to accelerate our knowledge of the scope.