dr. sizeler's done a lot of work with medical interns and residents and that's around hours of work for learningd yet in both situations, we can also focus on the car crashes. so we're here at the national transportation safety board, health well-being, but we're all about safety. and we're focused on this because lives get lost and people injured. and it seems that that piece, and you showed the data that when you change the start time of schools, crashes go down, safety improves, and i'm just wondering how much, again there's been a lot of health and well-being especially focused on the learning part, but really one of the, at least equally important hook here is the safety for all of these individuals at any level of our educational system, and for all of us generally, to be focusing on how the safety element of this needs to be as included as health, well-being or learning anything else we want to be talking about here. >> well, you know, i think that we're really going to enact change through education here. you know, i -- you know i listen to the radio. i commute by ferry. i listen to the