> Both these texts talk about aeroplanes, teleportations, rockets, test-tube baby, body preservation and medicines that heal serious battle injuries. And it is talked about in a matter-of-fact way, as if there is no novelty in these technologies. The frustrating part of these texts is the mixing of facts with fiction. So it becomes difficult to know what was really available back then. But the sheer thought that ancient humans atleast dreamt these advance ideas makes one wonder what type of civilisation was there back then?

If ancient civilization actually realized any of those technologies, I'm certain it would have left a significant archeological trace that would have been discovered by now. For instance: an actual airplane (as opposed to a glider) would need a significant industrial base for the engine and fuel that we'd probably see all kinds of evidence for. I don't think that's the kind of thing a solo inventor or even a city-state could manage independently.