I mean, it's not like SpaceX doesn't test. They missed something, and unfortunately this time it caused a total loss that they're going to have to answer to. But yes, you're right; we recently implemented a two-week demo lockout policy at my office. No changes are allowed being committed closer than two weeks from a demo date, and two or three guys are dedicated to just testing and shaking down the system. They're the only ones allowed to call for a bug fix, and they're only allowed to call for a bug fix. It seems as though management has finally realized that missing one requirement during a demo is much, much better than having the whole enchilada crash spectacularly.