When Mrázek began his interviews, he expected to discuss phenomena such as the transition from colonialism to postcolonialism. His interviewees, however, wanted to share more personal recollections. Mrázek illuminates their stories of the past with evocative depictions of their late-twentieth-century surroundings. He brings to bear insights from thinkers including Walter Benjamin, Bertold Brecht, Le Corbusier, and Marcel Proust, and from his youth in Prague, another metropolis with its own experience of passages and revolution. Architectural and spatial tropes organize the book. Thresholds, windowsills, and sidewalks come to seem more apt as descriptors of historical transitions than colonial and postcolonial, or modern and postmodern. Asphalt roads, homes, classrooms, fences, and windows organize movement, perceptions, and selves in relation to others. A Certain Age is a portal into questions about how the past informs the present and how historical accounts are inevitably partial and incomplete.