Appreciative Inquiry: Methodology, Set of Principles and Philosophy
As a long standing practitioner in AI (since 1994/1995) I would like to say that AI is a 'both and' rather than an 'either-or' approach.
From that perspective AI can be seen as a methodology
(the 4 or 5 D's), and/or a set of principles
(referring to the 5 or more principle's, depending on what literature you read) and/or a philosophy on how to live our lives
. Personally I go for the latter and see AI (primarily) as a way to look at the world, searching for our positive core. Interesting is that today we find more and more evidence that taking the AI approach is delivering astonishing results.