 In the last years, inclusion of part optimization and fatigue analysis (SimWise "4D+" or "4D Plus") still running on cheap personal computers lead even students and small companies to benefit of virtual prototyping as demonstrated by several reported cases by Lista Studio.WM was originally introduced in the early 1990s as a boxed software product from Knowledge Revolution in San Francisco, for Macintosh.Knowledge Revolution was acquired by MSC Software in Santa Ana, CA, and WM was than resold to Design Simulation Technologies, Inc. of Canton, Michigan.