These steps gradate from the rational to the emotional. Learning design by progressing through these steps is optimal for two reasons. The first reason is that each tier is dependent on its predecessor—for instance, learning visual design without a strong understanding of interaction design will lead to poor output. The second reason is that this transition gradually moves you from pure logical, quantitative thinking to more qualitative, aesthetic thinking. (via Making the Transition from Development to Design—My Experience and Advice — Some Random Dude)
