Antifragile is a category beyond fragile and resilient

Taleb argues our language for disorder is impoverished: we can describe things that break under stress (fragile, like glass) and things that withstand stress unchanged (resilient, like a rock), but we've had no name for things that actually improve from stress — until he coins antifragile.

The body's own systems demonstrate the category constantly: muscles that go unused atrophy, but muscles subjected to the controlled stress of exercise grow stronger; bones deprived of impact weaken, but bones subjected to load density-increase. Stress, in the right dose, isn't damage — it's the signal that triggers adaptation.

This reframes the goal of risk management entirely: instead of asking "how do I eliminate shocks?", antifragile systems ask "how do I expose myself to the right kind and amount of shock so I get stronger from it?" Takeaway: some volatility isn't a threat to manage away — it's fuel.