The Human Factor
Modern computer aided design and construction techniques can manufacture precision components and streamline production, but the immaculate detail and finish of models, patterns etc. can only be achieved by skill and dedication.
This human factor, and its influence on the finished product cannot be replicated by a machine, which might be able to sand and polish a given number of times, but will never be able to tell when the end result is right. Nor can a machine pay close attention to detail; it takes a person to do that. A person who takes a pride in their workmanship, the ability of their own two hands to create a look and a finish of real quality.