MSBB got it right "Getting every component exactly right every time is a fericiously expensive business." But good engineering used to be what we could do ....... at least we could design it right. From what I've read of Reaction they seem to be going about this the right way, slowly stage by stage, getting each stage perfectly right, bringing as much in house as possible so as to keep quality control in their own hands. They can certainly seem to do the engines. Now if only we had a decent airframe manufacturer in the country who could begin the design process, this project might actually work.