He was one of the original creators of the TurboTax engine as well as a long time associate at Taligent, the operating system company that almost could. He’s also run R&D for game companies and worked on a number of state of the art applications for the U.S. government. He’s worked with Windows since 1.03, with a half decade spent in Macintosh land. He also wrote two books on C++, Smalltalk, and object oriented programming in the early ‘90s.