Several years ago I was a full time custom knife maker. I worked with a well known knife maker who taught me how to grind and shape blades and handles and the many steps involved in making a custom handmade knife. I made over 3000 knives in the years I worked there, and had the chance to see how much our customers appriciated our knives.
Because of the community of artists, designers, potters, painters, and craftsmen that being a knife maker brought me into, I grew to appriciate items that were hand crafted and one of a kind.
When it comes to bows I prefer selfbows, but I also appriciate glass bows that have the maximum amount of hand crafted elements, like hand shaped tips and handle sections, with the obvious differences from one bow to the next that come from the human factor. This is certainly true of selfbows and can be somewhat true of glass bow.
When Black Widow started using CNC machines they stopped writing hand crafted on their bows and started writing "precision crafted". Precision is a good thing, but I prefer as many hand operations as possible in a bow, which to my mind infuses a bow or a knife with special, undefinable qualities, hence my original question.