I don't know how to emphasize more that this - rather than classroom-based learning - is where we should be focussing our efforts. As Cross writes, "Informal learning has always played a larger role than most people imagined, but it’s becoming increasingly important as workers take responsibility for their own destinies. Formal learning consists of instruction and events imposed by others. When a worker chooses his path to learning independent of others, by definition, that’s informal." This is an outstanding article, clearly documenting the importance of informal learning, defining it, and showing how organizations can make the most of it.