examples of cities which have tried to attract the Creative Class but, in comparison to cities which better exemplify the "three 'T's", have failed. Creative Class workers have sought out cities that better accommodate their cultural, creative, and technological needs, such as Chapel Hill, San Francisco, Washington, D.C., Austin, Seattle, Toronto, Ontario and Portland, Oregon. Florida also notes that Lexington and Milwaukee, Wisconsin have the ingredients to be a "leading city in a new economy". The "Creativity Index" is another tool that Florida uses to describe how members of the Creative Class are attracted to a city. The Creativity Index includes four elements: "the Creative Class share of the workforce; innovation, measured as patents per capita; high tech industry, using the Milken Institute's widely accepted Tech Pole Index…; and diversity, measured by the Gay Index, a reasonable proxy for an area's openness" (2002, pp. 244–5). Using this index, Florida rates and ranks cities in terms of innovative high-tech centers, with San Francisco being the highest ranked (2002). Florida and others have found a strong correlation between those cities and states that provide a more tolerant atmosphere toward culturally unconventional people, such as gays, artists, and musicians (exemplified by Florida's "Gay Index" and "Bohemian Index" developed in The Rise of the Creative Class), and the numbers of Creative Class workers that live and move there (2002). Research involving the preferences and values of this new socioeconomic class has shown that where people choose to live can no longer be predicted according to conventional industrial theories (such as "people will go to where the jobs/factories are"). Creative workers are no longer bound by physical products, rather working with intellectual products. Their migration to metropolitan urban areas where creative work is available is more due to the attraction of leisure life and community rather than actual work. Although the Creative Class works towards the globalization of progressive and innovative ideas and products, they can also be considered to value local community and local autonomy. Sociologists and urban theorists have noted a gradual and broad shift of values over the past decade. Creative workers are looking for cultural, social, and technological climates in which they feel they can best "be themselves". "The main assumption underlying this approach is that creative workers seek creative outlets in all aspects of their lives and therefore migrate to cities that actively support their preferred lifestyles" (Donegan et al.,