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Re:Simple Systems Have Less Downtime by sev0 on Tuesday March 03, 2020 @03:44PM (#22478550)
"Law" can also be used for pithy statements that don't have to be particularly rigorous. C.f. Murphy's Law.
Re:Simple Systems Have Less Downtime by K0SM0S on Tuesday March 03, 2020 @04:14PM (#22478787)
This statement generalizes quite well all around the world to the other kind of law, that's voted in parliament/congress... haha! ;-)

More seriously, I think the word OP is looking for is theory. Nuggets aren't theory, they're really empirical by essence — observations.