Right, but my point is that "traditional" views of backups had two types of backup -- incremental and full. The "let's store the delta between snapshots" soluti

Right, but my point is that "traditional" views of backups had two types of backup -- incremental and full. The "let's store the delta between snapshots" solution is what would traditionally be called an "incremental" backup while a full copy of the entire filesystem would be a "full" backup. Time Machine might call itself an incremental backup, but this just leads to more confusion -- it's a next-gen backup system (that has the benefits of both the "incremental" and "full" approaches) just like restic, borg-backup and all other similar projects.