I agree with your thoughts on the decision making behind NASP. Even while it was still COPPER CANYON, doubts were being raised. Most of the big decisions to proceed seem to have been made after relatively brief presentations with limited technical detail or discussion. NASP was a case of selling a big picture without stopping to ask how possible it really was.<p>Personally, I find the X-33 more frustrating as this got far closer to flight and although it may never have led to VentureStar it would have been a great hypersonic testbed