Just as the invention of the telescope revolutionized the study of the heavens, so too by rendering the unmeasurable measurable, the technological revolution in mobile, Web, and Internet communications has the potential to revolutionize our understanding of ourselves and how we interact. . . . Three hundred years after Alexander Pope argued that the proper study of mankind should lie not in the heavens but in ourselves, we have nally found our telescope. Let the revolution begin.-Duncan WattsWe have entered a new era in the social sciences and humanities: the computational era. Rooted in the analysis of unprecedented amounts of social data and cultural material, computational social science and computational humanities blend traditions from the social sciences and the humanities with tools and approaches from computer science, engineering, and linguistics. This disciplinary cross-pollination has unearthed old disciplinary debates, including those around epistemology: what constitutes knowledge and the goals of knowledge building and, particularly in the interpretive social sciences and the humanities, the role of objectivity in knowledge creation.