Neither of these machines does anything on its own, and that is the entire point of the pairing. The Komandirskie runs on a hand-wound 2414A, so it keeps time only for as long as you remember to wind it, and it stops the moment you forget. There is no rotor doing the work for you while you sit still. The watch asks for a few seconds of attention every morning, and in return it runs for another decade.

The owner was always part of the machine.

The Trabant made the same demand in a heavier form. Its two-stroke engine needed oil mixed straight into the fuel, so the car did not move until the owner had done that job first. The engine had few enough moving parts that people serviced it at the kerb, and the body panels were a resin composite rather than steel, which is the kind of decision a factory makes when it expects the owner to keep the thing running for thirty years.

Both were built on the assumption that you would keep this one for a long time and handle the upkeep yourself. That is a different argument from a watch that hides its display or a car that hides its engine, because here nothing is hidden at all. The work is simply yours to do. There is one difference worth naming, and it is where the verdict lands. You can still buy a new Komandirskie today, while nobody has built a Trabant since 1991, so one of these outlived the system that made it and the other was a product of it.