Dennis' point is that this points us to designing eLearning that is shorter and to the point.
The advent of shorter attention spans that successful learning events need to engage the learner, but I think this concept has often been given lip service while the focus of most learning is on how to save dollars by using software that will allow rapid development of e-learning courseware by the subject matter experts who know their materials. Unfortunately the subject matter expert may not be the best story teller.Great points ... I also wonder if changes around reading styles (see Stop Reading - Skim Dive Skim) doesn't suggest better content presentation formats to make sure that people get the few critical items.