I was reading a document about disabilities recently, and came across a term that confused me:
Myth: People with disabilities are handicapped.
Fact: The terms "disabled" and "handicapped" are often used interchangeably. In fact, the latter term carries negative connotations, indicating that a disability prevents someone from being a full functioning member of society. A disability does not always present a handicap; rather it often means that a person with a disability may do something a little differently from a nonviable person, but with the same result and with equal participation.
The context seems to suggest that nonviable person is the opposite of person with a disability. While I'm familiar with the concept of viability, I've never heard the term nonviable person before. The intended meaning seems counterintuitive, and my Etymology Online/Ngram searches turned up nothing. Is this usage common, or perhaps a recently coined term with a known meaning in the context of disabilities?