That is, I think, one of the most fundamental insights, brought first to software engineering, but now through collaborative spreadsheets and documents and so on become kind of like the social norm. The Occupy movement and the Sunflower Movement would not succeed without collaborative note-taking software, for example. So I think that ledger is often overlooked, but I think it’s the kind of fundamental ledger of our times. The CRDT (Conflict-free replicated data type) is based on decentralized version control.