Mike Caulfield interprets Siemens's article on OERs as an attempt to extend the Overton window. What's that, you ask? It's basically the 'middle ground' - that area of action and policy that is politically tenable. "To enlarge or shift the window of possibilities you do not want to argue forcefully for things already in the window of possibility - you want to argue for things outside the window, things that are too radical for the moment." One of the major effects is discourse is the capacity - and the responsibility - to take principled stands on issues, thereby extending the reach of that principle into the realm of what counts as possible. A point of view that is always accommodating will find itself losing, over time, to one that is not always so. More on the debate from Graham Attwell.
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