5. "mechanical", in the sense used here (roughly, "performing a function involving physical as distinct from (bio)chemical, nuclear, etc., mechanisms") is orthogonal to any sense of the word "organic", plenty of other biologically-produced structures are "mechanical" in teh same sense; its not that there is a false dichotomy at issue, the senses of the words are well-understood to not form a dichotomy at all, though there are other senses of the same words that might be part of something understood (rightly or not) as a dichotomy.