Furthermore, fast iteration that isn't averse to failure. While they do what they can to make each test a success, they don't let it turn into a black hole of time, money, and manpower. They're willing to say, "yeah, that's good enough", test, and make the most of every aspect of the test.

Where a more traditional aerospace company would go out of their way to avoid failures at any step, SpaceX embraces them so long as nobody is endangered in the process.