Architectural critic Aaron Betsky challenges conventional thinking about our built environment in his new book "Don't Build, Rebuild," in which he makes the case for transforming existing structures rather than constructing new ones. From San Francisco's empty offices to Los Angeles's historic core, Betsky explores how this approach can not only address housing shortages and climate change but also preserve the soul and stories embedded in our buildings. He discusses the economic challenges, policy hurdles, and gentrification paradox while arguing that reimagined architecture can be more beautiful and meaningful than new construction, carrying within it the patina of human experience.