: With the exception of the Angry stage of Durandal's Rampancy, where he
: kidnaps the Marine, there is not a single instance in the Marathon
: universe where Durandal uses violence gratuitously, or for non-defensive
: purposes. And in that respect, I think Strauss' "experiment" is
: quite a success, and that Durandal, at least using the definitions
: (sometimes by negation) of the Rampancy terms in Defend THIS!, is very
: much of a stable Rampant AI..
I'm not sure about that - I recall in the Lost Terminal Packets, that Muller repeatedly mentions Durandal's interferences in the defense of the Marathon. Leela mentioned them too: Durandal would open doors into restricted areas, letting the aliens in; he'd close and lock doors and redirect elevators, separating militia squads; disrupt communications; and so on - all things that weren't really purposeful. I suppose if you're an AI programmed to open doors, that's as destructive as you can get - short of opening all the airlocks. (Well, actually the airlocks are probably manual-release for safety's sake, so he probably couldn't.) But before he became lucid again, he certainly seemed to do some pointlessly destructive things.
Afterwards, though, he calmed down.