Wilbert Kraan asks the question central to e-learning standards: "for a new type of tool, do you agree an interoperability specification first, and then build applications, or build applications first, and then agree a spec later?" A bit of both, he seems to argue; that's why the E-learning Framework (ELF) is being developed iteratively. He eventually steers toward my way of thinking: "Finally, there is sheer, blinding simplicity. Not just to make sure the spec is consistent and coherent, but mostly to make adoption as easy as possible. RSS and Atom are clear examples of what can be done there. Developers are what makes a technology work, after all."