This document discusses the role of advanced computer simulation in modern cosmetic surgery. It describes how computer simulation can help both physicians and patients by allowing patients to visually express their desired changes and allowing doctors to demonstrate expected results. The objectives of computer simulation are to avoid patient dissatisfaction by explaining realistic expectations and limitations prior to surgery. A survey of over 7,000 patients found that explaining both desired results and potential problems led to higher patient satisfaction compared to only explaining benefits. The conclusion is that educating patients thoroughly through computer simulation can increase satisfaction by managing expectations.