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It’s natural to explain an idea in terms of what you already have in your head. Concepts are piled on top of each other; this idea is taught in terms of that idea, and that idea is taught in terms of another idea, which comes from counting, which can be so different for different people!

I often think about that, especially when I’m teaching some esoteric technique such as integrating Bessel functions. When I see equations, I see the letters in colours - I don’t know why. As I’m talking, I see vague pictures of Bessel functions […] with light-tan j’s, slightly violet-blueish n’s, and dark brown x’s flying around. And I wonder what the hell it must look like to the students.

Richard P. Feynman, as told to Ralph Leighton, “It’s as Simple as One, Two, Three…”
#fragments#richard feynman
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