Well, something can be functional only as long as the hypothesis made on the operating environment are relevant. After what it becomes broken by obsolescence.

Well, something can be functional only as long as the hypothesis made on the operating environment are relevant. After what it becomes broken by obsolescence. If a device relies only on fundamental physical hypothesis, surely it can certainly go pretty far. Look how pyramids are still great landing facility to this days. Too bad that the hi-erratic art of building the matching spaceships was lost since then — but that’s how it goes when you run for the high sophistication in your design.