> And the employment situation in the US is still very good in historical terms. (There are valid concerns about the methodology behind the headline unemployment rate, but it's still the same methodology.)

I should add: historically, increases in the unemployment rate have a tendency to accelerate and then produce a spike, which is then brought under control by some other mechanism, and tends to correspond with a recession. But this is just the normal boom-bust cycle, and seems rather unavoidable. The rate can't keep going down forever, and having it level out doesn't seem feasible, either. The magnitude of such a spike doesn't necessarily indicate the severity of economic downturn, either.