Dave, you’ve much here to comment on, and likely, I will post a response on my blog so as not to take too much space here. However, I want to address one critical comment that George makes about the rhizome as metaphor: However, beyond the value of describing the form of curriculum as decentralized, adaptive, and organic, I’m unsure what rhizomes contribute to knowledge and learning. He appears to be suggesting that the rhizomatic metaphor says little or nothing about how to address the decentralized, adaptive, and organic world, instructional and otherwise. I think this is an error.

While it would be a mistake to look to Deleuze and Guattari for a pedagogical blueprint, they do refer to two principles that say much about knowledge and learning: cartography and decalcomania. These may be the least discussed of the rhizomatic principles, but they are important, especially for education.

Cartography in Deleuze and Guattari suggests a process of mapping against shifting, decentralized, adaptive, and organic reality, and then remapping, and remapping again. Always testing reality, and not looking for the right answer, but for a useful answer. Making markers, placing anchors, looking for reference points to see where they take us, all the while knowing that the anchors must sooner or later be hauled up or repositioned as the tide shifts. Of course, this is all metaphor rather than formula, but that is the attraction of the rhizome, at least to me. The metaphor of cartography, then, suggests that knowledge is never permanent, but always provisional, useful at best, and harmful when it becomes dogma. I suspect George would agree with this, and it seems quite consistent with Connectivism and other strains of post-structuralism.

Then decalcomania is even more pointed. For those who may not know, decalcomania is an art process of transferring a pattern from one place to another through some medium. Children doing handprints on paper in kindergarten is a common example. This is a marvelous metaphor for a theory of knowledge that I’m seeing in Downes’ discussions and Olaf Sporns’ work in neuro-physiology. If knowledge is a network configuration, then it is not transferred as some tiny nugget from teacher to student. Rather, it is a pattern, a function of networks, that the more or less sensitive and receptive fabric of the student’s mind echoes more or less well in and through its encounter with the teacher’s words, actions, lessons, props, classroom environment, amount of time til lunch, the attraction/distraction of the child beside, etc. Cartography is a marvelous metaphor that captures remarkably well a very difficult concept, given that most people think knowledge a packet that is encoded and packaged by a sender, then transferred to a receiver across some medium, and finally decoded by the receiver. Cartography helps me visualize how patterns can echo throughout an ecosystem (classrooms, nations, frog ponds). I think this way of envisioning the spread of knowledge is entirely consistent with Connectivist epistemology, or what I understand of it, and this metaphor can be explored in great detail with huge implications for pedagogy. For example, it renders obvious why 30 different students learn 30 different things from the same lesson. It’s like their 30 different handprints: same paper, same paint, different prints.

I’ll write more about this later, but my students have finished their assignment, and I have to get back to teaching. Later.