. >> sheldon jacobson, professor of computer science and director of the simulation and optimization lab at the university of illinois, urbana champaign. professor jacobson, thank you so much for joining us . >> thank you for having me. it's a pleasure to be with you. >> how badly shaken do you think the flying public is at this point? >> air travel is a partnership and there has to be trust because when you buy an airplane ticket and you buckle in, you are trusting the airline. you're trusting the faa, you're trusting the manufacturer of the airplane to do the right thing. and occasionally, unfortunately. but the good thing is, it's only occasionally something happens. and alaska airlines, unfortunately for them, happened to be the airline that flew the plane that resulted in this door plug blowing out. so, uh, it is it is so important to realize that with over 80,000 flights every day in the united states and thousands of airplanes, this is a very isolated incident. nonetheless, it should be taken seriously. and the faa is doing the right thing by investigating . boeing doesn't wan