"An abstraction is a sign for a computational object." Writing that on my wall. Over the past year, I have revisited the SICP [0] and the audio recording of a

"An abstraction is a sign for a computational object." Writing that on my wall. Over the past year, I have revisited the SICP [0] and the audio recording of a one-week short course that Hal Abelson and Gerry Sussman taught for HP [1]. You nailed it. [0]: "The Structure and Interpretation of Computer Programs", https://en.m.wikipedia.org/wiki/Structure_and_Interpretation_of_Computer_Programs https://en.m.wikipedia.org/wiki/Structure_and_Interpretation... (see also https://github.com/sarabander/sicp https://github.com/sarabander/sicp ) [1]: http://cabezal.com/sicp/ http://cabezal.com/sicp/