It's not a contradiction what I wrote, it's a fair point. Two of the five shuttles eventually exploded with passengers on board. Better to learn the hard edge cases in testing.
You probably shouldn't have started the sentence with "No" then, but never mind. Let's hope that space travel will be safer in the future.
Anyway, I really just wanted to point out that 50 years ago it was apparently possible to develop spaceships in less time without a "move fast and break things" approach.