The final element in our characterization of the static properties of organizational knowledge is the distinction between the knowledge of an individual and that of the organization. Any discussion of firm knowledge confronts, ultimately, the problem of unit of analysis. We leave to the side the important task of specifying a more explicit integration of individual and organizational knowledge (such as via a shared culture, mechanisms of socialization, or an assumption of affiliative needs), but turn rather to laying out a description of the problem by distinguishing between personal, group, organizational, and network knowledge. The following discussion is summarized in Figure 2.