"Antifragility" is a new term to me, but one that is very near to "resilience". Rhamis Kent attended the Caux Forum for Human Security’s Dialogue on Land and Security and has written down a few key thought and observations on this idea. https://permaculturenews.org/2013/08/03/antifragile-epiphanies-reflections-from-caux/#more-10433