Book excerpt: This is an open access title available under the terms of a CC BY-NC-ND 4.0 License. It is free to read, download and share on Elgaronline.com. Offering a novel and interdisciplinary approach, this thought-provoking book critically analyses the notions of fragility and antifragility and addresses their connections and applications in planning theory, urban studies and architecture. It goes beyond the risk and resilience paradigm and proposes methodological and pragmatic strategies to cope with severe forms of uncertainty and socio-spatial inequalities.