How Do You Manage Time Zones?

How do you handle this, like, problem of time zones? How do you deliver real time education globally? And the second thing is, in terms of engagement, how are you measuring it? We're really proud to have very low refund rates, five % or lower. A lot of our data, frankly, is more of the qualitative type. There's a lot of activity, a lot of engage a on te different threads, or people turning their assignments.