Intentionality - "is at the heart of knowing. We live in meaning, and we live 'towards,' oriented to experience. Consequently there is an intentional structure in textuality and expression, in self-knowledge and in knowledge of others. This intentionality is also a distance: consciousness is not identical with its objects, but is intended consciousness" (quoted from Dr. John Lye's website - see suggested resources below).
The concept of community of practice is influencing theory and practice in many domains. From humble beginnings in apprenticeship studies, the concept was grabbed by businesses interested in knowledge management and has progressively found its way into other sectors. It has now become the foundation of a perspective on knowing and learning that informs efforts to create learning systems in various sectors and at various levels of scale, from local communities, to single organizations, partnerships, cities, regions, and the entire world.