How are those "rocks of certainty"? 2 planes crashed, resulting in deaths of hundreds of people. There is validity in questioning "rocks of certainty". These pe

How are those "rocks of certainty"? 2 planes crashed, resulting in deaths of hundreds of people. There is validity in questioning "rocks of certainty". These people were trusted in certifying the plan. These people were trusted in doing the correct choices after the first crash. Obviously, the "experts" did not do what they had to do.