[but what do people use it for other than trading, Mikasa. That's not a reasonable resource!!! Azhar does not dispute this though, instead just inclining his head.]

... mm, because Vikute bones are durable. Burn the memory to the bone, and what's worth learning is never forgotten.

[He taps his palm over his chest then, as if it explains anything at all. At least... that implies it's not literal, just very extra.]