I got to wondering about the language problem, and started reading and 
reflecting.   At risk of being boring about this, the word "chemical" is a 
very interesting word and legitimately, it seems, means differing things to 
different people.  One example: 
http://en.wikipedia.org/wiki/Chemicalhttp://en.wikipedia.org/wiki/Chemical

To those educated in the arts, the word has a different spin, and tends to 
refer to things that are synthesized or isolated from a "natural" object. 
Check out the dictionaries.  They have a hard time with this word:  A 
typical dictionary defines "chemical" in terms of "chemistry".  See 
http://dictionary.reference.com/browse/chemical and 
http://dictionary.reference.com/browse/en%3Achemistry,

allen 

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