It's implied by their claim that there is a single responsible individual. If someone else reviewed it and said "yep, looks good, deploy the change" how is there one "individual responsible"?
The idea of an isolated root cause or single human error in the failure of complex systems is bogus anyway. I'm a huge fan of the work in this area championed by John Allspaw [0].
Indeed. Someone runs the department that individual works in and allowed this kind of uncontrolled process. Someone is that person’s boss and should have been asking how well controlled are our processes, and so on. Turned Turtles all the way up..
