[badsectoracula]

I guess you could make something similar with PowerPoint and "jump to slide" actions and VBA macros, but i haven't seen any HLP or CHM (even though CHM could technically do it via JavaScript) that work like that.

Still, what i found interesting was mainly the way this was presented in bite-sized pieces (via the pages that couldn't arbitrarily extend via scrolling), combined with clear graphs/pictures and interactivity (not just hyperlinking, but also end-of-chapter quizzes and in a couple of cases showing values changing live as you move your mouse over them).

Technically simple stuff, of course, and certainly done before (i mean, ToolBook was made in 1989 and is still around, so chances are someone is using it :-P), but not something i see often, which seems to be a shame. I had only heard the name "fuzzy logic" before, but after reading that presentation (just the fundamentals) i got a decent idea about what they are and it was easy to follow the tutorial. In comparison the same URL has a bunch of PDFs, including a text-only tutorial that seemed to describe more or less the same stuff. However i could only glaze over before closing it since i just couldn't focus on it. The interactive stuff is just so much more attractive :-P