Yes it is, by definition. Once people are "smart", in the Feynman sense, there's no need for anyone to teach them a subject - they're self-motivated learners that will seek them out on their own.
You learn the basic facts (or processes), you learn to apply them in simple situations, and you learn to apply them creatively.
Although somehow intuitive, I don't think that's a good model. What are "basic facts"? What is a "simple situation"? What does it mean to "apply facts creatively"? All of these are vaguely intuitive but not well defined, with no epistemological basis. There is a much better definition of learning - the ability to create models of our experiences, test, and refine them. I know of no reason a cheap test can't be devised to test such learning, nor of any attempts to create one.