How about the GAO report that says it will cost 1.7 billion dollars to "fix" problems discovered during this "concurrency" fiasco?
I was never good at math, but that means if there are 1,700 aircraft produced during concurrency, then it will cost 1 million per plane to fix deficiencies. However, obviously, there will not be 1,700 production aircraft produced during the concurrent development phase. If, say 340 planes are made during this phase, each will require fixes totaling 5 million per aircraft. If there are 170 planes produced that will require fixes, then the additional cost to bring these planes up to standard will be 10 million dollars each!
What a deal!!
It's like being caught in quicksand and struggling ever more frantically to escape, while only sinking deeper.