First principles:
           -----------------
           
           "If you want to do something really innovative, you have to apply
           a sort of first principles analysis. And don't reason by analogy--
           analogies are referencing the past.

           "First Principles means you look at the most fundamental truths in a
           particular area and the things that are almost indisputably correct.
           And you reason up from there to a conclusion.

           "And if you see that the conclusion is at odds with what people
           generally believe, then you have an opportunity."

           -- Elon Musk