Really nice paper that describes a fundamental dilemma regarding learning object metadata: on the one hand, indexers do not what to specify an educational context in which the resource should be applied, because that would rule out other potential applications, but on the other hand, the choice of metadata terms used to describe content of a learning object is inevitably based on assumptions about how, when and where the asset is likely to be used and by whom. The author suggests three possible approaches toward resolving the dilemma, the most promising of which involves enabling "communities of interest to annotate resources" - what I have been calling "third party metadata."
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