Precisely. I've simulated this numerically and shown that the curve of [deaths]-vs-[duration of widespread economic crisis] is concave, like an inverted parabol

Precisely. I've simulated this numerically and shown that the curve of [deaths]-vs-[duration of widespread economic crisis] is concave, like an inverted parabola that's been truncated by eventually getting a vaccine (or effective treatment). Perhaps counterintuitively, the points on the strategy curve that have both lowest death counts and shortest widespread economic crisis are the same. I've published these simulations here: "Surprising COVID-19 Strategy: Reduce Economic Damage and Deaths Simultaneously" https://www.youtube.com/watch?v=NuNrkG188HA https://www.youtube.com/watch?v=NuNrkG188HA