We suggest lines of inclusion in human-computer interaction (HCI) investigation as an approach towards remediating some of the problems that arise with the increasing specialization (fragmentation) of HCI as a domain of scientific inquiry. As a complement to the study of subgroups of users and their special needs, consider users in subgroups as lying on a spectrum, a continuum, from “normal” users of the general population. Doing so can provide at least two wins: (1) The implementation of recommendations may reduce or even eliminate deficits that separate a sizable portion of the special needs group from general inclusion e.g., in the classroom or the workplace. (2) Recommendations emerging from the study of a particular user group may have broad application to the general population of people who use computers. Moreover, the study of a “special needs” group may prove an especially effective way to elucidate these general recommendations. We explore these wins with respect to two special user groups: Older people and people diagnosed with attention deficit and hyperactivity disorder (ADHD).