Musk calls this “reasoning from first principles.” I’ll let him explain:
I think generally people’s thinking process is too bound by convention or analogy to prior experiences. It’s rare that people try to think of something on a first principles basis. They’ll say, “We’ll do that because it’s always been done that way.” Or they’ll not do it because “Well, nobody’s ever done that, so it must not be good.” But that’s just a ridiculous way to think. You have to build up the reasoning from the ground up—“from the first principles” is the phrase that’s used in physics.
.. We could have called Newton’s law of universal gravitation a proof—and for a long time, it certainly seemed like one—but then what happens when Einstein comes around and shows that Newton was actually “zoomed in,” like someone calling the Earth flat, and when you zoom way out, you discover that the real law is general relativity and Newton’s law actually stops working under extreme conditions, while general relativity works no matter what. So then, you’d call general relativity a proof instead. Except then what happens when quantum mechanics comes around and shows that general relativity fails to apply on a tiny scale and that a new set of laws is needed to account for those cases.
.. Like look at Galileo. He engineered the telescope—that’s what allowed him to see that Jupiter had moons. The limiting factor, if you will, is the engineering. And if you want to advance civilization, you must address the limiting factor. Therefore, you must address the engineering
.. Historically, all rockets have been expensive, so therefore, in the future, all rockets will be expensive. But actually that’s not true. If you say, what is a rocket made of? It’s made of aluminum, titanium, copper, carbon fiber. And you can break it down and say, what is the raw material cost of all these components? And if you have them stacked on the floor and could wave a magic wand so that the cost of rearranging the atoms was zero, then what would the cost of the rocket be? And I was like, wow, okay, it’s really small—it’s like 2% of what a rocket costs. So clearly it would be in how the atoms are arranged—so you’ve got to figure out how can we get the atoms in the right shape much more efficiently. And so I had a series of meetings on Saturdays with people, some of whom were still working at the big aerospace companies, just to try to figure out if there’s some catch here that I’m not appreciating. And I couldn’t figure it out. There doesn’t seem to be any catch. So I started SpaceX
.. In the 1960s, a creative performance researcher named George Land conducted a study of 1,600 five-year-olds and 98 percent of the children scored in the “highly creative” range. Dr. Land re-tested each subject during five year increments. When the same children were 10-years-old, only 30 percent scored in the highly creative range. This number dropped to 12 percent by age 15 and just 2 percent by age 25. As the children grew into adults they effectively had the creativity trained out of them. In the words of Dr. Land, “non-creative behavior is learned.”