1.6 User research and other disciplines 11 4. Awareness of uneven rates of growth. People are learning new technologies but not at the same pace that the technology is moving. To exist in this increasingly complex world, users' knowledge, skills, and experiences must be broadened. However, people are still fundamentally bound by their psychology ­ technology has not changed that yet. We can still only keep seven plus or minus two things in our working memory (Miller, 1956). We do not innately possess knowledge of how to use Photoshop. We see daily innovations in tools and technology and no one can keep up with or understand it all. The point is that user researchers must be aware of how vast the difference is between the user community's knowledge and skills, and the artifact being tested, even if the research sponsor is not aware. Thus, what is central to global user research is how to understand and unify the wants and needs of a diverse set of users based on culture, language, experiences, and technology literacy in a dynamic world.