The provided sources explore how complex systems—such as ecosystems, financial markets, social networks, and critical infrastructure—respond to stress, uncertainty, and shocks. The core concepts form a spectrum of systemic responses:

1. Fragility, Robustness, and Resilience

• Fragility describes systems that suffer disproportionate harm from volatility and extreme events, mathematically represented by concave responses to stressors.
• Robustness is a system's ability to resist disturbances and maintain its basic functions without changing its state.
• Resilience describes the capacity to absorb shocks, recover, and adapt to unexpected conditions while sustaining core operations.

2. Antifragility Introduced by Nassim Nicholas Taleb, antifragility goes beyond resilience. While resilient systems merely survive  ...