On 1 May 2004 09:16:21 -0700, (D. A. Clark)
posted:

No two men have the same set of tools or the same set of experiences;
therefore, no two men may have the same knowledge or understanding of
working wood. It is living trade.

Nothing to do with it.

The term "living trade" is just a parallel with "living language"

Any language which is spoken by living humans evolves and changes.
The opposite is a "dead language" such as Latin which is static and
does not evolve or change.

Similarly for "living trade". I'll let others think of "dead trades".