Selected parts was the ''argument'' for the AT Signet series ,also
for for the ''Precept'' series as if AT nomenclature was not sufficient
''extendeded''. Some scientist complain about ''too many variables''.
What about ''to many names''?
Besides this imply that the parts are not equal . I avoid expression
''identical'' in order not to cause additional confusion. Those are, I think
PR ''arguments''. Besides how are we supposed to know or check? .
There was ever an linguistic theory about ''emotional meaning of words''.
I think that expression ''original'' causes ''emotions''. But this theory
lost from ''referential one'' which prefer names for the identity
determination. But there are to many objects in the know universe,
not to mention the parallel one, so we have not names for all of them.
That is why we use ''descriptive names'' like ''iron horse'' for the
first seen locomotive or ''the teacher of Alexander'' , etc, etc,..
We also use words to pretend something or other. So be careful
by reading post in our forum.