I'm taking a community building course to help with my Course Club idea. I've been thinking, what is a community? Why do people join them? Why do people stay in them? This Week: Idea of the Week: Communities: Join for X, Stay for Y Unknown unknowns are things that you don't even know you don't know. The idea of the week is definitely in this category. I've been thinking about things you want but don't actually know you want, and I've been thinking about this through the lens of community.