My threshold was more generous, 8 cases per million people per day.
As for my estimate and logic, it's kind of handwavy. But if daily infections are 1/1000, and you lived like an average person, you'd expect a 1/1000 risk. I don't normally live like an average person -- but if I go dine in, I'm probably exposing myself to average people, which washes away much of the other caution. So it's safe to dine-in if the average infection rate is tolerably low.
At somewhat higher rates, maybe 100? per million it might be reasonable to go around on transit etc. masked, but avoid indoor unmasking.
At 1000+ per million, I try to minimize how much I'm asking my mask to do...
no subject
As for my estimate and logic, it's kind of handwavy. But if daily infections are 1/1000, and you lived like an average person, you'd expect a 1/1000 risk. I don't normally live like an average person -- but if I go dine in, I'm probably exposing myself to average people, which washes away much of the other caution. So it's safe to dine-in if the average infection rate is tolerably low.
At somewhat higher rates, maybe 100? per million it might be reasonable to go around on transit etc. masked, but avoid indoor unmasking.
At 1000+ per million, I try to minimize how much I'm asking my mask to do...