A.I. and Multiple Intelligences

How do we define "Intelligence"? One definition is to say intelligence is the ability to think in abstract terms. This is what separates us from animals. Polar bears, walruses, otters and other mammals have a marvellous ability to survive in their habitat. However, "intelligent" isn't a word that leaps to mind when we describe them. It is humans who have the ability to think in abstract terms -- to use metaphors, to devise calculus, to convert music to notes, to associate colour with emotions, to use logic, to think about thinking, to moralise, to contemplate eternity, and so on.