We have so far been discussing the significance of the very title "Mandukya."
It would not be very inappropriate for the new initiates into the literature to enquire also into the etymological construction of the very Upanishad.
From one angle of inquiry we may say that this word is formed by adding the prefixes 'upa' and 'ni' to the root 'shad' ( upa+ni+shad = Upanishad ).
Here the meaning would be upa = near; ni = in a lower plane; shad = to sit -- the knowledge is to be gained through hearing from a guru, by sitting near him, not with an intellectual or mental or physical attitude of equality, but with a devoted attitude of submission, reverence and respect.
To be continued ...