I'm guessing it's the latter, because you have to keep the mine-disabling mechanisms working and powered up through possible adverse weather and environmental conditions for long enough that the conflict has a fair chance of having ended.
If you wanted to design something fail safe, the best way would be to make the powered up state the danger state. So when the power fails, the device is inactive.
I don't know how it works for rats, but I assume it is like with dogs. If you have already a trained dog, you make the same exercises with the trained and the untrained dog, so the untrained dog can just watch what the trained dog does and imitate it.
> Well managed people are much happier in my experienced
Emphasis on the well-managed. If the management actually helps the tram achieve their goals and doesn't stifle them, then great. Otherwise, you end up with bloat.
- William Golding
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