To ensure that the right amount of responsibility for the "Error" is placed on the right humans.
I'm afraid that's not my impression (right or wrong) reading the different threads on this unfortunate accident. There seems to be no understanding of Prof. Reasons swiss cheese model of accident causation. Once again, right or wrong, I come away from the threads here that some people would have preferred Captain Collins to have survived the accident, so that he could be hung, drawn and quartered, and his head stuck on a pike in the town square.