A working quadriplegic talks with the Washington Post about Social Security's work incentives. By the way, it's naive to think that if a quadriplegic can work, anybody can work regardless of their impairments. Pain and mental illness are different ball games. Age reduces the ability to make vocational adjustments. People with lowered intellectual capacity have diminished ability to make vocational adjustments. The biggest factors, though, are pain and mental illness. I'd rather be a quad than a schizophrenic or to suffer from chronic, severe pain. Most Social Security disability claims involve mental illness or chronic pain.