A Solvable Stochastic Model of Debugging Abstract: Stochastic processes model immature software processes. The model of an isolated debugger following the "Hacker Ethic" is presented. It is a Binomial Queue and easily solved. The distribution of defective parts follows. The expected quality of the code depends on diagnostic and fixing skills not the length of time spent hacking or the initial quality. Several different processes (extreme programming, open-source, clean-room, . . . ) are shown to tackle the problems with this approach to software development.