From an essay by Lorraine Wild, That Was Then, and This Is Now: But What Is Next? from: Looking Closer Four: Critical Writings on Graphic Design, comes an interesting discussing from Assistant Professor in Graphic Design, Todd Roeth.
Designers need a lot of common sense. In short, effective graphic designers need to be able to be sensible and conscious of different viewpoints, and different styles of language (verbal and non-verbal) within their culture and the types of mindsets that speak them. Furthermore, graphic designers then need to draw from their body of knowledge and experience, and employ it to cleverly, shrewdly, and creatively solve the problems graphic designers are challenged to confront. And that common sense is free to all who have the passion – or at least, the wherewithal – to seek it, but priceless when obtained.