It would seem that given the magnitude of what happened many of us have been trying to rationalise and understand what led the FO to take the actions that he did. However of course what happened was not due to a rational mind, but one that had gone beyond the behavioural boundaries that we take for granted. It would be optimal to take sensible precautions to try to put in place new procedures to try to prevent the same actions being repeated in the future. It would seem that a lot of effort quite reasonably is being expended to achieve just that. No preventative measures will be 100% efficacious, as has been repeatedly said, but if new procedures are able to prevent just one other incidence of a similar type in the future then that would be worthwhile. Looking after the lives of all the people on board cannot have a price put on it, nor of the suffering of relatives - after all the relatives of the victims will live with the horror of the aftermath for the rest of their lives.