Sana, one things that you are very good at is helping us figuratively move into spaces we're uncomfortable to be in. And i understand that some of that came through failures. You tell us about a time when you didn't get this aspect of teaching right in your mind? Of course. I'll start off with little bit of of background, a little bit of a story. The community college mission, the two year college mission, is near and dear to my heart because i was raised by an incredible scientist.