Something is only difficult until someone tries to do it and succeeds ... then it isn't difficult anymore, and a couple of years later it is super easy, because we got used to it being the norm.,(reply>), that's it, keep it vague, so nothing sticks... is your day job fence sitter or jock rider?,(reply>), @@Philip Dunne Peter Thiel's book Zero to One illustrates the dichotomy to which you allude.  To go from zero to one (invention) is infinitely more resource-intensive than going from one to n (reproducing and improving inventions).  Musk's genius (in my opinion) is that he seems to moving multiple zeros to ones simultaneously by moving an order of magnitude more ones to n (improving the efficiency of things that already exist on a vast scale), which is the first-principles deconstructionist engineering approach to which Keller and Fridman allude in this video.,(reply>), @Larj Kok My comment was an obvious truism, but not a cynical one. It is a simple statement of fact, and I did not say any specific thing is easy.,(reply>), You obviously haven’t seen Free Solo.