"Imagine the sensory overload of a walk in the park. Every path shimmers with the flow of humanity. Every person drips with the scent of information: experience, opinion, karma, contacts. Every tree has a story: taxonomies and ontologies form bright lattices of logic. Desire lines flicker with unthinkable complexity in this consensual hallucination of space and non-space, a delicious yet overwhelming sociosemantic experience."
An excellent introduction that can help older teachers understand what's going on in IT. If a teacher started his or her studies based on this, they could very quickly get up to speed with what's going on.