Book excerpt: How are images made, and how should we understand their limits, capacities, and forces in digital media? While functioning as representations or mediations of the political, images also act through the technologies and social processes that they claim only to represent. In both capacities, images can be innovative, but they can also reproduce harmful phenomena such as racism, misogyny, and conspiracy. Boundary Images investigates the political, material, and visual work that images do to cross and blur the boundaries between the technological and biological and between humans, machines, and nature. Exploring the limits of the visual and beyond what can be seen, Boundary Images posits these boundaries as starting points for the production of new and radically different ways of knowing about the world.