Yes. Clearly, there was some failure in systems engineering. And one must look at this very carefully and find out what went wrong such that many good diligent

Yes. Clearly, there was some failure in systems engineering. And one must look at this very carefully and find out what went wrong such that many good diligent highly qualified people screwed up so royally. But unreflective ill-informed hostile accusations sometimes seen here (“lies”, “care only about profits”, etc.) is certainly neither appropriate nor helpful in avoiding a repeat of the problem.