Comment by nimonian

I saw the word hypertextbook somewhere online once and it just stuck in my head. For me, it has come to mean a textbook (so, beautifully typeset, well organised and written, easy to tell where I am, distraction-free) enhanced with code (keep track of learning, tasteful interactives, maybe video, a smattering of ai perhaps). A webpage/app lends itself to this nicely. If I'm honest, the idea is a little inchoate but my instincts tell me there's something to it.

Primer looks like an interesting system - I'm on the mailing list, good luck!