That is robustness. A robust thing can endure many stressors, but the stressors either leave it as is or make it worse. Antifragile systems can get better from

That is robustness. A robust thing can endure many stressors, but the stressors either leave it as is or make it worse. Antifragile systems can get better from being stressed, at least to a limit. Muscles are antifragile, as one example. You stress them moderately, and you grow stronger. Stress them too much and you'll break, but within limits your muscles don't just endure the stress, they improve from it. No physical phone is antifragile.