When you automate a previously all-human system, it becomes entirely deterministic. The new system is capable of making only those responses planned explicitly by its builders. So the self-healing quality is lost. Any response that will be required must be put there in the first place. If ever the system needs to be healed, that can only be done outside the context of its operation. Maintainers come in to take the system apart and reconstruct it with one or more new planned responses added.
