Linear versus Nonlinear

The web finally gives us an opportunity to attempt nonlinear expression. If we ever get good at it, I think such nonlinear modes will better express how people really think. Plus, the genuine learning happens when the students or audience are interacting and filling in the spaces that occur with nonlinear presentations. (I attempted one such web essay last semester. This is the sort of presentation I'd like to see in place of lectures typed up and posted on the web. Plain linear text always reads better on paper than on a screen. )

However, linear explanations are often important. How do we weigh what to attempt? I found this chart, embedded in the Yale C/AIM Web Style Guide, fascinating:

The essay accompanying the chart is thought-provoking and useful. Note in particular the distinction made between training and education. Are the students taking any particular online course looking for training or education? This is worth considering while designing the course.