I found Alan Kay's lectures on the topic very intriguing as well as the STEPS write-ups and the other paper I linked to in that comment. There's a whole lineage or tree of ideas that seems not to have caught on, perhaps for good reason, but that is not clear to me, but it does seem to be clear to Alan (that it wasn't for good reason, that CS behaves more like a pop culture, and not a real science or real engineering field). And it's not like he doesn't have relevant credentials and accomplishments The STEPS project seems to have been his last attempt at trying to breathe life into this largely neglected part of the history of computing / lineage of ideas in software design. I sincerely do hope you'll look into it. Actually kind of excited about the prospect to be honest