People have kindly suggested some other things I should be thinking about re that post from the other day.
And I remembered that I'm trying to write a non-fiction book with Inform7, which must be a thing.
Other things:
Tony reminded me of Jeff Noon's microfictions here and here.
Richard pointed out Cybernetics And Ghosts (pdf).
There are all sorts of interesting possibilities in Frankie's Responsive Text (make your browser window much smaller, see what happens to the words.)
And having assembled an Adafruit Internet of Things printer over the weekend and started playing with it, I'm even more convinced that things like BERG's Little Printer will create new forms of magaziney writing.
(And Matt has provided a timely analogy by making more 'Music For Shuffle'.)
Onwards to PowerPoint!