More like two options: 1. "A staggeringly comprehensive knowledge of UNIX", three years of domain-specific education, and a network of people who trust you to-

More like two options: 1. "A staggeringly comprehensive knowledge of UNIX", three years of domain-specific education, and a network of people who trust you to--no, who depend on you to be able to get things done with that knowledge 2. A piece of paper just like everyone else in the department, three years of domain-specific education, and a network of people who trust you to--no, who depend on you to be able to get things done with that knowledge (and probably a girlfriend)