what would you say to a school administrator thinking about going back to remote learning? >> i would say we've learned a lot over the last couple of years. in the beginning when we weren't sure exactly how this virus would behave, who would be most likely affected by this, i think there was a lot of confusion. if you add in that we were flying blind because there wasn't enough testing, it was tough to make the case that kids should be in school at that point. but by the fall of 2020, jake, certainly by the end of 2020, it was pretty clear. you and i did a town hall on this. big studies came out from not just around the world but even here in the united states showing that schools could open safely if you did a few things, including masking, improving ventilation. having testing. those things make a big difference. we obviously have the vaccines now as well. so i can understand the concern, but i think we're basically close to two years or a year and a half of knowledge that schools can open safely. i realize it's still frightening