I can still remember the immediate comment by a Spanish Captain who had just aborted take-off when above V1, having experienced severe and unexplained airframe vibration.
He said that he didn't know if his action had unnecessarily killed a small number of passengers or miraculously saved the lives of nearly everyone on board.
When the cause was finally established it turned out to be a nose tyre failure.
I really felt sympathy for that man as it is always obvious what a pilot should have done, long after the event.