I didn't mean "like hypercard" so literally in this manner. What I meant was, a computing environment that seems to blend seamlessly into the wider operating system, and that is able to sufficiently blur the line between end users and "programmers" (here called "authors"). Critical to this capability was the ability to "pop the hood" easily and mess with what was going on underneath.
All of today's computing is fundamentally based on a strong division between programmers and users. That division has only grown more stark with time. The dominance of Unix is partly to blame, in my view.