Disability is part of the human condition. The term disability includes impairments (loss of function such as hearing impairment), and restrictions or loss of opportunities to join in everyday activities as an equal. Opportunities can be lost or restricted because an individual has physical or cognitive difficulty in carrying out actions and tasks (activity limitation). This can also happen because an individual faces problems in real life situations, which can be caused by environment or social factors. The definition of disability offered by the Disabled Peoples' International (DPI) is the limitation or loss of opportunities to participate in their community or society in normal everyday life situations at the same level with others due to social and physical barriers.