SOP's
Yes, the major cause of accidents is human error. That is well proven. But how can we improve that?? Why does it happen? It has been happening for a long time, and is still happening. Will we fix it by doing what we have always done?
Will we fix anything by prosecuting pilots? In some cases pilots do not follow SOP's. Why? Is there a lack of credibility in the system? Or the SOP's? Why, and will it be fixed by prosecuting pilots?. I don't think so. Should we also prosecute the Chief pilot and managers for hiring pilots who do these things?
The simplistic, militaristic "blame game" is like burning witches. It makes the scientific gathering and analysis of data very difficult. And progress then stops. With the job half done.