etic symmetries, and conservation principles,
    is the kind of &quot;stuff&quot; that I learned in my physics books
    and courses, in the last century, not from H &amp; P &amp; A, if
    maybe a little from LT.

SS: Well, leaving aside from quantum phsicists and cosmologists (who might harken
    to your triads for all I know), as a biologist with some knowledge of chemistry,
    climatology and geology (all those -gys!), my statement does characterize thinking
    in these disciplines.  So, with free f