hospitalizations, the spot positivity rate. the rate of transmission, are all dropping like a rock. number one. number two, we're making progress with vaccinations of newly eligible groups, including kids. three, we're optimistic that the under 5 group of kids will soon become eligible. fourthly, we know, we have a little more latitude. four weeks from now when this will be lifted in terms of of a little better weather and ventilation options. you put all that together. you analyze those data streams and realities. it is pretty clear that in our judgment, this is the right, responsible step to take. i said today, we're not declaring victory but we are stating affirmatively that we can responsibly live with this thing and that is the reason we're doing it. >> as you know, most states do not have mask mandates for schools. have you seen evidence that these mask mandates have been