Is "controllable" the only decision point? Measures that aren't 100% effective (and thus fail the "controllable" standard) can still have lots of impact. We c

Is "controllable" the only decision point? Measures that aren't 100% effective (and thus fail the "controllable" standard) can still have lots of impact. We could do a lot at the margins to reduce respiratory infections if people just made better decisions (and had a little more support to make better decisions).