Information displays should be annotated, combining words, images, graphics, whatever it takes to describe and explain something. Annotation calls out and explains information and, at the same time, explains to viewers how to read data displays. Good annotation is like a knowledgeable expert/teacher at the viewer's side pointing and saying, "Now see how this works with that, how this might explain that..."
Yehudi Menuhin, a great violinist, marked up a score for Bach's Sonata No. 2 for Solo Violin. Penciled annotations show real-time performance strategies. To outsiders, insider markups appear chaotic and cryptic, but these personal annotations are for Menuhin's eyes, the only eyes that matter. All can learn from this useful workaday grid strategy: a relevant and intense data layer can become a coherent substrate scaffold upon which to overlay additional information. Maps do this all day long.
Design means something even broader now. Sometime around World War II, it came to mean making things that “solve problems.” With the influence of mid-century global social movements and the rise of digital technology, it began to mean making things that are “human-centered.” And as of recently, design doesn’t have to involve making things at all. It can just mean a way of thinking.
Of all these developments, the idea of design as a broadly applicable way of thinking—the idea of “design thinking”—may end up being the most influential…At Stanford’s d.school, as cofounder Robert Sutton has said, “design thinking” is often treated “more like a religion than a set of practices for sparking creativity.”