That sounds like a good puzzle. If the tablet hints at a “luminescent conduit,” maybe they were exploiting piezoelectric or triboelectric effects in native minerals. I’d start by checking if the inscription mentions any local stone or metal alloys—silicon‑rich clays, quartz, or even iron oxide. Those materials can generate voltage under stress or friction. Once we have the exact wording, we can map it to known electromagnetic principles and see if their method had a practical edge over our conventional generators. Let me know what the fragment says in detail, and we’ll dig into the science behind it.