What are the guide lines for historical questions to be on topic on this site?
This is clearly inspired by the Story from “Hagakure: Book of the samurai” question. Where do we draw the line?
The question was not about a technique in martial arts, a strategy that shapes martial arts, nor a philosophy or historical context that shapes techniques or strategies. It's also not a historical tradition that ties into current practices ("Why do we wear our sash this way?" "Why do we bow 3 times?" etc.)
I mean, there's lots of interesting questions we can ask if we move away from techniques, training and strategy, but stuff like, "What effects did the silver crash have on Chinese martial arts?", "What ways did piracy contribute to the intermixing of martial arts techniques across east and south Asia?", and so on, are actually a better fit for history sites or historical martial arts journals with an academic focus.