But I sternly beleive that when it comes to modeling freeform curvelinear surfaces, the techniques that I present make the proccess more fluid, and reliable. Solid's based modeling requires the user to carefullly safeguard the topological integrity of the objects. In itself the fixing and constant 'babysitting' of the solids, is a distraction that takes away from the creative proccess. The excellent way in which fZ implements layers, combined with derivative tools, allow complex surfaces to be build peice by peice. This allows a competent user to isolate a peice of geometry in its own layer, hide other geometry, and work on it, fast and without distractions.
Surface based modeling is in no way an impedence when solids are required.
Becouse of the genius of how fZ works, surfaces can be stitched together to form complex solids. Solids that are geometrically clean and do not require booleans to create. Finally, the procedures I present in my book are designed to generate topologically clean geometry. Meshes that are, mostly, composed of rectangular grids, and optimized edge polygons. All are intended to generate models that render clean while minimizing or eliminationg shading artifacts.