Additive Manufacturing, Means Design Breakthroughs

Paper or Plastic? Three objects changed your entire working life and you don't even know it: the IBM 3800 Laser printer in 1976? The Hewlett Packard DeskJet in 1988? 1984's 3D System Corp's "One" 3D printer, and now it's changing again with Additive Manufacturing and it's a 3 Billion dollar industry. Artisan sculpting and design with paper, plastic, molds, etc, as a function to product development and expect that rapid prototyping as the last step? And it can be, but integrated design, engineering and output effects every firm that operates in the step to expect the but how does this effect any new product development.