I'm less certain than I used to be about a lot of things, more humble, not always so great at that bit. Listening to you engage in meaningful conversations around topics of what we know and how to interpret data has been good. You've talked a lot about how you're grappling with people's need for certainty. When you're the person, everyone thinks should know the answers. Maybe a brief example will help. Started it on accident. It's not something I've really sought after. But I like to challenge myself to do things that are hard.