1. Differentiating communities of practice (CoPs) and communities of interest (CoIs) nature of problems knowledge development major objectives weaknesses Dimensions different tasks in the same domain common task across multiple domains refinement of one knowledge system; new ideas coming from within the practice synthesis and mutual learning through the integration of multiple knowledge systems codified knowledge, domain coverage shared understanding, making all voices heard group–think lack of a shared understanding communities of practice (CoPs) communities of interest (CoIs) shared ontologies social creativity; diversity; making all voices heard strengths beginners and experts; apprentices and masters stakeholders (owners of problems) from different domains people legitimate peripheral participation informed participation Learning Beyond binary choices: Understanding and exploiting trade–offs to enhance creativity by Gerhard Fischer, First Monday, volume 11, number 4 (April 2006), URL: http://firstmonday.org/issues/issue11_4/fischer/index.html