I see the problem is not only the PTB but the people in general, they are so afraid of losing their beliefs that they even don't want others to investigate on their own, for the fear of the discoveries.. I was talking some weeks ago with a relative, he has been to Vatican Archives many times to investigate, he said that you can only enter with a recommendation letter from a researcher who had been previously accepted or known by the Vatican. He also said that one of his University teachers (he studied in the Pontifical University Antonianum in Rome) had come one day to class with the book "The name of the rose" by Umberto Eco and he told the students to burn it, because it was full of historical mistakes. Well you could argue that it's a novel, but the fact that the teacher was so mad at the book makes you think.. and those students became University professors also so the system/false knowledge perpetuates..