Abstract
The concept of learning object is discussed, and its value assessed. It is proposed that the key factor is use, rather than the inherent characteristics of the object. The eLearning specifications which can be used to define reusable learning objects are then reviewed, and their advantages and disadvantages outlined. IMS Learning Design (LD) is discussed in greater detail, together with its origins in the earlier OUNL EML specification, and analyzed in terms of the debate surrounding learning objects. The feasibility of using IMS LD to support reusability is examined, with reference to studies carried out at Universitat Pompeu Fabra. Appropriate tooling is identified as a key issue, and current initiatives for supporting implementation and adoption of the specification are indicated.