It has been too long. The book described both approaches that both programmers used. I simply no longer remember those details. As I recall, the working prog

It has been too long. The book described both approaches that both programmers used. I simply no longer remember those details. As I recall, the working program, when explained gave you the "Ah Ha!" experience, and thus was simple enough. The focus of the entire book was more about psychology aspects. One chapter was about how programmers come to feel "ownership" of code. Another thing: what was an entire program back then, is sometimes a mere function, or maybe a class or code library today.