"To clarify what I mean by decentralised: applications whose main purpose is fulfilled as part of a network, where that network is not reliant on any preordained nodes. Decentralised applications are also known as “federated”. There is also a more specific term “distributed”, also known as “peer to peer”. I won’t cover the distinction with the more specific terms because it’s not relevant here. I use the word application in a looser sense, to also cover protocols and specifications."