"I would much rather fly in a used 787 than on that 787’s first flight. Let somebody else take that first flight. Look, the fact that you just flew it yesterday means that it's probably really good to fly right now. And that’s going to be true of rocket vehicles, too. In the future, because of reusability, nobody with a really expensive satellite is going to want to put it on an unused rocket. They’re going to decide that’s too risky."