That would be something that is intelligent to you. I believe the author (or anyone in general) should be focused on mining what intelligence objectively is.
Best we will ever do is create a model of intelligence that meets some universal criteria for "good enough", but it will most certainly, never be an objective definition of intelligence since it is impossible to measure the system we exist in objectively without affecting the system itself. We will only ever have "intelligence as defined by N", but not "intelligence".
