I'm also curious about how you evaluated diversity. For example, my current city and one I'm intimately familiar with (Denver) scores only a 2 on diversity, while Boston scores a 5. Ethnically, both cities' largest demographic is non-hispanic whites (Denver 52%, Boston 47% -- not tremendously different; when you add in suburbs Boston is considerably whiter than Denver). The next two groups for Denver are Hispanic or Latino (32%) and Black or African American (10%), and for Boston Black or African American (24%) and Hispanic or Latino (17%). Again, these don't seem tremendously different to me. Denver has the largest Mongolian population in the United States, hosts one of the largest Native American Pow-Wows in the country, and has had 2 Black mayors and one Hispanic mayor (Boston has never elected a non-white mayor.) I realize there are other forms of diversity, but Denver does fairly well on those too (for example, 5.8% of Denver's population is LGBT; Boston is a slightly higher 6.2%.) Point being, I don't understand what criteria were used to score these cities on opposite ends of the diversity spectrum given that they both seem fairly diverse to my eye.