Re: this quote from Domash's essay: "The Shankaracharya tradition has preserved not only > these sounds, but also a system of rules or formulae by which > they are to be assigned to individuals, the idea being that a > particular sound has a quality that resonates best with the > structure of a particular nervous system. "
If a set of rules or formulas was being followed that indicate which sound resonates best with the structure of a particular nervous system, then why would the mantras given have changed over time?
