The proliferation of large-scale, administrative datasets from private companies and governments has created the opportunity to answer entirely new questions about economic well-being and upward mobility. This opportunity requires understanding the limits of such data, bringing fieldwork to bear as needed, and addressing new conceptual, methodological, and ethical challenges. We stimulate collaborations

among sociologists, economists, ethnographers,

spatial analysts, urban planners, and others

to better understand inequality

and increase opportunity.