Agency is a concept used in philosophy and sociology to refer to the capacity of an agent to act in a world. In philosophy, the agency is considered as belonging to that agent even if that agent represents a fictitious character, or some other non-existent entity. The capacity to act does not at first imply a specific moral dimension to the ability to make the choice to act, therefore moral agency is a distinct concept. In sociology, an agent is an individual engaging with the social structure; the structure and agency debate concerning the level of reflexivity that agent may possess.