Before I moved to Chicago in 2005, I didn’t even know cities had their own flags. In Chicago, the city flag is everywhere. It’s incorporated into all different aspects of city life and the design elements are used on businesses, websites, clothing and apparel. So when I moved back to San Francisco in 2008, I looked up our city flag and wondered why I never really noticed it before. Ugh, now I know. Ted Kaye, editor of Raven- a scholarly journal of vexillology and treasurer of the North American Vexillological Association, helps me understand the principles of good flag design and imagines with us a better flag for the greatest city on earth (IMHO).