MPN11 (#14),
...ANY controller, of either persuasion, has potential to drop a ball occasionally and the incident in question shows how easily it can happen...
You have put your finger on it: "To err is human"; the man or woman who cannot make a mistake has not been born yet. (But, "To forgive is not Company Policy" ?)
Nic pic of all you poor battery hens in your gloomy henhouse ! Fresh (air-con) air, blue skies (occasionally), and starry nights, under wall-to-wall octagonal glass, suited old D. much better !
Danny.