HN user
Antifragility sounds exciting, but there's really nothing there. In the context of economics, it simply means relying on competition instead of central planning (by government or by TBTF banks). Outside of economics Taleb has no real examples of antifargility. Engineering is always about robustness, you have 0 examples of engineering systems that are "antifragile".
Let me play devil's advocate. From what she's saying I'm drawing the conclusion that mental illness correlates with drug use which correlates with violence. The prevalence of mental illness in the population is small, so the proportion of the mentally ill among violent criminals is also small, but if mental illness is a predictor of violence then being more aggressive about institutionalizing the mentally ill would provide society a better return on investment with respect to preventing violence than policies aimed at the general population (such as gun control).