Dr Kevin Rutherford is a highly experienced software development coach and extreme programmer working for the XP Surgery. He is the creator of the vastly under-rated Reek code smell detector, and the vastly over-rated book 'Refactoring in Ruby'. If you have ever used Unix System V or taken out a mortgage in the UK, you have unwittingly used his code. He now spends much of his time teaching and mentoring senior developers throughout the UK in software craftsmanship. His Erdos number is 3, and he was using vi before you were born.