Based on Nassim Taleb’s book with the same name, the concept (in very simple terms) describes the characteristic opposite to fragility. Most of us would describe it as robust, resilient, strong. Nevertheless that is only half way, for none of those qualities increase when greater pressure is applied. Anti fragile then behaves the opposite of fragile, the greater the pressure the more growth, strength or wisdom is achieved.
All the seeds in this collection belong to the pyriscence category, meaning their blooming depends on the presence of extreme heat or fire. Stoic and Zen philosophy overlap in this way of thinking, where an event that normally would severely hinder someone is the fuel that causes growth.