As you describe it, the system is worthless then and does nothing. How long to wait is up to you. https://en.wikipedia.org/wiki/Halting_problem https://en.wiki

As you describe it, the system is worthless then and does nothing. How long to wait is up to you. https://en.wikipedia.org/wiki/Halting_problem https://en.wikipedia.org/wiki/Halting_problem [Edit] Any observations can be an event, and a stopping point. [Edit] I could put a resistor on the table and call it a system, and wait for it eternally, but I'm not sure that's useful. You need a desired outcome, and some limits to make rational decisions. Actually, mathematically, we can find certain limits. [Edit] You also can't prove a negative, as some future state may eventually disprove it. So you will have to assert something like "I expect such results at such time."