Designing on Both Sides of Your Brain
http://www.boxesandarrows.com/archives/designing_on_both_sides_of_your_brain.php

Berkun, Scott
Boxes and Arrows
2002

Abstract:

There's a natural balance that can be mastered between both intensely imaginative, and passionately logical lines of thought. We need to seek out this synergy to be good at design. The surprising truth is that for designers everywhere, the scientific method can be an extremely powerful tool for finding and evangelizing your great ideas.