The importance of manual sketching using pen & pencil. 

There are complaints about the conventional usage of color pencil, pen and sketching in my data visualization class. Well, the simple sketching is important to help our brain to connect. Without tools limitation, sketching with pen and pencil help us to unleash the true creativity and create something novelty. In visualization design we need this kind of skills. Perhaps – your novelty design will become future trends in the coming tools.