Here is an excerpt :
"Fresh eyes can indeed produce insightful results, but the eyes must also be educated and knowledgeable. Designers often lack the requisite understanding. Design schools do not train students about these complex issues, about the interlocking complexities of human and social behavior, about the behavioral sciences, technology, and business. Many designers are woefully ignorant of the deep complexity of social and organizational problems. I have seen designers propose simple solutions to complex problems in education, poverty, crime, and the environment. Sometimes these suggestions win design prizes (the uninformed judge the uninformed). Complex problems are complex systems: there is no simple solution. It is not enough to mean well: one must also have knowledge."
I believe working with nonprofits (pro-bono) is an excellent way for designers to gain some of the missing knowledge Don speaks of. Designers working with community based organisations. Organisations staffed with people who've studied social science, and the behavioral sciences. And who use those skills daily to serve their communities. This exposure, working on multi-disciplinary teams is critical for designers seeking to fill the gap in knowledge.
DD+D's Design Empathy, Design for America, Project H and others' offer opportunities for design professionals and students to make the change in thier education that Don speaks of.
Please find Don's complete article here.