At the very least, the definitions above suggest that enhancing the robustness of a policy does not necessarily raise its resilience, and vice versa.
One could even imagine a certain trade-off: a highly resilient policy that is effective in bouncing a 2  system back to its very specific pre-shock equilibrium state is unlikely to be highly robust as it might be quite idiosyncratic, i.e. tailored to a specific system. Second, how do robustness and resilience relate to optimal policymaking?