Solving for X is a feature-length documentary about the quantitative approach to human rights data. The film documents the work of Dr. Patrick Ball, leader of the Benetech Human Rights Data Analysis Group. Based in Silicon Valley, Ball and his team travel the world helping human rights supporters apply sophisticated computer analysis to human rights events. Three examples of this quantitative approach are explored in the film: in Kosovo, Guatemala, and Liberia. In each case, Ball and his team use complex tools to answer a simple question: who did what to whom.