[hatsuseno]

The article references the Henderson Escher example, which is nicely surmised in a SICP lecture from '86: SICP-3A video https://youtu.be/2QgZVYI3tDs?list=PL8FE88AA54363BC46&t=3678

I was instantly thrown back to my time watching this series and doing the exercises, which I highly recommend to anyone.