I'm sometimes envious of sports and how easy it is to measure craftsmanship, talent and ability when referring to specific athletes, coatches or teams.. It seams as though you can't apply the same logic to the arts, as it's a matter of taste or cultural context etc, but the truth is it's actually not that different. Craftsmanship is mesurable. I can argue that I can play tennis, and that my version of playing the game is as valid as the one played by Roger Federer, but that would be ridiculous. It has to do with both an indepth understanding of the game and at the same time, being able to act upon that understanding in ways which are original, effective, creative and inspiring. Artistic craftsmanship is indeed mesurable I think, the fact though there will never be any agreed upon system to measure it, is both frustrating as it is exhilarating.