Along with the germ cell concepts in the previous entry, we need to consider the flow of germ cell concepts in the classroom. Outside of the teacher, where are the key nodes in the network? Do they involve students? Bottlenecks could result from not including students in the network of knowledge flow in addition to not having appropriate germ cell concepts. So, the lever points somehow involve the interaction of students, ideas, and niches in the classroom. I'm not quite sure where to go with this. One point to consider is that in education today, there is a focus on the learner-centered classroom, as opposed to being teacher-centered. However, a better approach might be a network-structured, idea-focused classroom, or more simply, a learning-centered classroom. Along these lines, I recommend reading Engaging minds: Learning and teaching in a complex world by Brent Davis, Dennis Sumara, and Rebecca Luce-Kapler.