Based on this information, and my perception of problems in the reuse area, I am beginning a project to identify and test principles for the design of reusable components. The approach is to identify and organize such principles–the more abstract being applicable to more objects. The scope of the study will be all lifecycle objects. The study is based on the assumptions that (1) reuse design principles exist for many different languages and environments, (2) that commonalities exist between the principles in those environments, and (3) that more general principles can be abstracted from these lower level common principles.