Term disability" means not" able and can lead us to believe that we can categorize people as either able bodied or disabled. Disability: a universal human experience that anyone can experience at any time; disabilities can limit a person"s ability to engage in daily activities; disabilities can be visible or invisible, temporary or permanent. During the 20th century, persons with disabilities were often segregated and institutionalized: veterans coming home from wwi changed the political context of disabilities. World health organization (who): united nations authority on health issues. A person can expect their abilities to change over the course of a lifetime according to their stage of development. Disability binarism: mode of thought that classifies people as either able-bodied or disabled. Defining disability can prevent an us vs them approach. This binary can erase people who are living in the grey" area of disability. Everyone has varying abilities and challenges, and they can all be unique.