Consider these words from Breivik's terrorist manifesto: "Once you decide to strike, it is better to kill too many than not enough, or you risk reducing the desired ideological impact of the strike." For a man not in control of his thoughts or actions, he sure did what he wanted to do.
News accounts indicate that Norwegians could accept an insanity finding as long as Breivik spends the rest of his life in government custody. But Oslo deliberately prohibits life sentences, even for the most heinous crimes. Politicians boast about the nation's humane criminal justice system, with its commitment to redemption.
So why do I think Oslo's chosen experts have decided that Breivik was insane? They're so sublime that they don't know how to recognize evil.