A fellow consultant with Net Objectives, Ken Pugh has more than two-fifths of a century of experience in software development—from gathering requirements for stock market analysis to testing real-time radar systems. Ken consults, trains, testifies, and mentors from London to Sydney on lean/agile processes and technology topics ranging from object-oriented design and test-driven development to Linux/Unix. He has written several programming books, including the Jolt Award winner Prefactoring and Interface-Oriented Design. He is currently writing Lean-Agile Acceptance Test-Driven Development. When not computing, Ken enjoys snowboarding, windsurfing, biking, and hiking the Appalachian Trail. Ken can be reached at email@example.com.