ABSTRACT
Prototyping is a high-value development activity. The reason for prototyping is to find out something one does not know and not to demonstrate something already known. Often, people lost in the prototyping activities forget the fact that the major purpose, or sometimes the only purpose, of developing a prototype is to evaluate a new concept or an unknown. By paying attention to the prototyping results and assessment, one can greatly improve the product performance. The purpose of prototype assessment is to conduct an evaluation to: provide answers to design questions; improve the prototype or design; review the usefulness of evaluation provided by the prototype; transform evaluation results into design or revision recommendations. Therefore, before conducting an assessment, the objective of the prototyping activities should be clearly defined, the prototyping methods should be consistent with the objective, and the testing or measurement should be able to achieve the original prototype objective.
