There are many varieties of social constructionism. Which one researchers are using in regard to Appreciative Inquiry is not always obvious. Traditional science or research perspectives assume a singular reality, an objective knowledge about this reality, and a fact-finding methodology which aims to produce objective and universal knowledge about the assumed reality. Given these assumptions, AI appears to be un-scientific. Constructionist philosophy is central to AI. In this article we shall sketch some key themes of what we call a critical constructionist philosophical stance. It is this stance which informs social action referred to as Appreciative Inquiry. Good questions are viewed as those that help to enlarge possible worlds and possible ways of being in relationship. Careful attention to listening constructs an ongoing form of life that is open and appreciative.