What problems are you solving with nostr? I remember Jack saying a few years ago that the way Nostr wins is by building a network of apps that can communicate with another. But that has to be meaningful. We’ve already solved a censorship problem, years ago, but what other problems are being solved? In the realm of edtech, progress becomes material because you can earn completion progress in different subjects across different apps that get assigned to your identity, and a number of other novel use cases in that realm but I don’t really see anyone working on edtech here. What other things can nostr solve? In what ways is having ownership of your identity and its contents purposeful?