A methodology for prototyping-in-the-large

The authors define prototyping as an experimental activity intended to reduce risk of failure in a software product. In this context, they explore the effect of scale in prototyping and then describe a methodology for prototyping a large application. The authors describe a system being developed to evaluate this methodology, featuring a pair of languages (Promo and Moblog) to serve both large-scale and component-level prototyping needs. The authors conclude with a presentation of how the proposed methodology would be applied to a sample problem, a fault-prediction subsystem within the Space Station Freedom project