I love Kari for the overall design and construction of a "natural impulse" escapement that works reliably without having him resort to hi-tech machines and materials - even more than his already superior finishing. With Dufour, the acknowledged grandmaster of hand-finishing techniques, the emphasis is not on improving accuracy or even efficiency - longevity yes. In an interview many years ago with the PuristS he explained why there is no regulation for the Simplicity - because, if I recall correctly, that after a couple of weeks he would be getting different results. If the watch is 15 secs off time per day, that's allright with him -- because it is a mechanical watch -- if 30 secs, then perhaps a qualified watchmaker should take a look at it. If you want accuracy buy a quarz watch! Check out the archive - if that is still possible. Well, that goes with the reassuring tic-toc that shows that a watch has "soul" - and that I am no longer able to hear. That's fine with me, but I am always open to new technologies and advancements - real progress. Then I can pose the question, how much finishing on "the movement" do we really want or need in a time-keeper - and not one primarily designed to become a luxury article