"The server is a target for syncing rather than the source of truth." For the type of problem Linear is trying to solve - a task/issue tracker - this makes sense. But I don't think it's the correct mental for web apps where the main concern is transactions/orders. The server is the SoT, or else you will deal with all sorts of crazy reconciliation scenarios that make for a lousy user experience (ex: the app accepted payment and promised an order, but in reality there is no inventory, which the server would have known had we checked there first).