This article is the conclusion chapter of the book by the same title. Evaluation can be defined as measuring the fit between achieved or expected performances to stated criteria. Prediction is the process whereby expected performance characteristics are simulated, or otherwise made tangible, when evaluation is applied to hypothetical design solutions. The multifaceted nature of design solutions precludes optimization of any one performance characteristic. Rather, a good design solution will strike a balance in the degree to which any performance criterion is achieved, such that overall performance will be maximized. This paper discusses the nature of evaluation and prediction, their multilevel and multifaceted dimensions, and some of the approaches that have been proposed to perform quantitative and qualitative evaluations