One thing leads to another, and... in this nice commentary, Clark Quinn calls on designers to think again about the concept of individualized learning. "I'll immodestly suggest that an approach we took about 5 years ago now (and UNext/Cardean was doing something similar) is a potentially valid approach. We provided a 'follow the bouncing ball' type of approach that led through the web pages, but we also provided a navigation mechanism that allowed individuals to navigate through the content according to the role of the type of content (e.g. concept, example, practice). The anecdotal results were that roughly half of the learners did as they were recommended, but another half used the navigation structure to direct their own learning."