2, I myself use Vector Analysis to explain the nature phenomenon of what the Ancient Chinese refer to. Vector Analysis is a tool for communication. where the nature phenomenon of what the Ancient chinese refer to is independent of any kind of communication tools.
Tomorrow, I might even using Brain wave frequency to explain the Samadhi states. The Buddha doesnt have to know about Brain Wave frequency at all because it is the entering of the samadhi states is the bottom line.
Your interest seems to be off the traget of discussing what is it, but argue for arguement shake. That I would have no interest in.