I'm not sure if someone can help or if this is even the right place to ask, but I've been looking for a while for a marvelous essay / blog post / article from an author whose name I don't recall, that I had stumbled upon a few years ago.
From what I recall, the author had been credited as an inspiration for Khan Academy's "Intro to Computer Programming" interface. The author says in that article that much better than this interface can be done.
The essay is then a point-by-point lesson on UX design in general, going over possible improvements to Khan Academy's UI/UX interface for learning code, as a detailed example of each of the points he is making.
Thank you very much to anyone that might know what I am referring to, and link me to it.