Another expert is Professor James Reason of the University of Manchester in England, one of the world's leading aviation psychologists and aviation accident analysts. He is world-renowned. He also supports Dr. Miller's call for a periodic check of a nation's aviation safety system. He has written, and I quote:
Since we can never entirely eliminate accident-causing factors, the only achievable goal is to attain a maximum level of safety fitness and then stay that way. This must be done by making regular checks on the organizational 'vital signs'. Finding a way of doing this effectively should take us beyond the last great frontier in aviation.