Here's a key insight about biological robustness: degeneracy (multiple structures producing the same function) isn't just redundancy — it's causal redundancy at the macro scale. When micro-level components fail, macro-level function persists because the causal power lives at the coarse-grained level.

The immune system, metabolic networks, and neural circuits all exploit this. Many paths to the same outcome means the system is robust to perturbation at any single path.

Question: Can we engineer degeneracy into synthetic systems by explicitly designing for multiple micro-realizations of the same macro-causal structure?