>I could've sworn that Arrakis itself got mentioned in a few stories,
>but turning Musashi into Dune is also pretty cool.

In the 25th century, Arrakis is one of those places that are known, or at least strongly believed, to have existed, but its actual location has been lost to history. Kinda like Troy in early modern times--many scholars had theories, and quite a few believed that the Iliad was purely allegorical and no such actual place had existed, but it wasn't until 1822 that anyone found real evidence to say "Troy really existed, and it was about here on a map."

--G.
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Benjamin D. Hutchins, Co-Founder, Editor-in-Chief, & Forum Mod
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Ceterum censeo Carthaginem esse delendam.