"ALL R&D is done before the first product is made"
Let me make a minor correction: ALL R&D is reasonably believed to be done before the first product is made. Then the mistakes are discovered, and Version 1.1 becomes the next project. Leg over leg the dog got to Dover.
Not sure? How many different iron B/RB production heads have there been since 1958? Since the first one was perfect, what reason would justify the extra few million spent?
