I reckon it’s time this link (http://www.kiddofspeed.com/) did the rounds again, the foul up at Chernobyl is something which should never be forgotten, a reminder that we all are only human and that reaction times and human arrogance is something which has to be factored into any design decision, whether it’s for a garden, kitchen, baby stroller, car, phone network or a nuclear reactor.
Design the system with the basic assumption that homosapiens is in the loop, with all the faults inherent in the species.
Please.