There is a whole literature based on this. A crisna uses these open ishads and gives a condensed message of the openishad to arjuna in the bug that's the bagawad gita. Ande christna teaches that to arguna, and in a very practical way. Openishes wi'll see it sounds, if you remember manduk openishad manduka carica, very abstract and very philosophical. But how do you apply it in day to day life? How do you talk? HowDo you eat? What doyou? The upanisas and the upanisadi literature. Sonow we come to theupanis upanis