Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future

by Ashlee Vance

Asked about his approach, Musk said, I certainly don’t try to set impossible goals. I think impossible goals are demotivating. You don’t want to tell people to go through a wall by banging their head against it. I don’t ever set intentionally impossible goals. But I’ve certainly always been optimistic on time frames. I’m trying to recalibrate to be a little more realistic. I don’t assume that it’s just like 100 of me or something like that. I mean, in the case of the early SpaceX days, it would have been just the lack of understanding of what it takes to develop a rocket. In that case I was off by, say, 200 percent. I think future programs might be off by anywhere from like 25 percent to 50 percent as opposed to 200 percent. So, I think generally you do want to have a timeline where, based on everything you know about, the schedule should be X, and you execute towards that, but with the understanding that there will be all sorts of things that you don’t know about that you will encounter that will push the date beyond that. It doesn’t mean that you shouldn’t have tried to aim for that date from the beginning because aiming for something else would have been an arbitrary time increase. It’s different to say, “Well, what do you promise people?” Because you want to try to promise people something that includes schedule margin. But in order to achieve the external promised schedule, you’ve got to have an internal schedule that’s more aggressive than that. Sometimes you still m...