Thirty-Something (Million): Should They Be Exceptions? -- "An examination of the role of human factors in addressing this population is presented which would include both special designs for disability/aging and the incorporation of disability/aging into mainstream human factors research and education. Statistics regarding the size and characteristics of this population are presented, including the costs of disability. Examples demonstrating the economic and commercial feasibility of incorporating disability/aging considerations in mass market designs are provided along with a discussion of the benefits to non-disabled users."