“Physics teaches you to reason from first principles rather than by analogy. So I said, okay, let’s look at the first principles. What is a rocket made of? Aerospace-grade aluminum alloys, plus some titanium, copper, and carbon fiber. Then I asked, what is the value of...

"Well, I do think there’s a good framework for thinking. It is physics. You know, the sort of first principles reasoning. 

(...) What I mean by that is, boil things down to their fundamental truths and reason up from there, as opposed to reasoning by analogy.

T...