but your argument is that it's a by-product from some high-technology stone cutting (machine?), right?
but if it resulted from the 'smooth' surfaces, how is it that the irregular surfaces are vitrified too?
you're conveniently shifting goal posts with another set of imaginary clauses just in order to keep your cherished view-point intact?
you seem to have missed the point about 'laser precision' which s2f also highlighted
Check out the video clip in this link:
i'm not going to bother myself with this