If you spend any time looking at most disasters they stem from a series of miscues that lead to the disaster happening or making it worse than it should have been. Usually the miscues are done by different people at different stages leading up to the disaster, but as pointed out the miscues in the case of the Concordia came from one individual- the Captain. This is the human element that most planners try to take into account but at the end of the day cannot be totally eliminated. With all of the redundancies built into modern aircraft it still took Captain Sullenberger to safely land a disabled jet on the water. Had he not been so skilled and competent all onboard would have been lost. As for calling the individual captain (I can't spell his name and don't want to take time looking it up), no- he was stripped of his ability to command a rowboat. In my view that puts him lower than a cabin steward or dishwasher (and putting him on the same level as them is an insult to them, since they still have their maritime credentials).