An alert FrontBurnervian (as they all are) points us to a cool, time-sucking interactive map that lets you look at every single job in the United States with a color code (you’ll have to navigate your way to Dallas). A guy named Robert Manduca, a Harvard Ph.D. student and mapmaker, put it together. Each dot that you see represents one job in Dallas. Blue dots are professional services. Green is healthcare, education, and government. Yellow is retail, hospitality, and other services. Go here to read a little about how you can interpret the data. One obvious conclusion is that downtowns are where the jobs are, not the suburbs. Here in North Texas, southern Dallas looks as barren as Prosper.