CRAIG LARMAN has been developing software since 1978, and has been teaching object-oriented programming to adult students since 1986. He holds a B. Sc. and M. Sc. in computer science, and is the creator of the GRASP patterns, designed for users new to the object paradigm. He has personally taught and mentored more than 2,000 students, and is currently Principal Instructor at ObjectSpace, a company specializing in object technology.