Posner pretty much nailed it with his Occam’s razor approach.
I’m not clicking. What’s the reason the gooberment spooks give—that we can’t handle the truth?
Does Occam’s razor explain why the CIA of 2017 wants to keep secret information from 1963? Gonna reveal the secrets of the newest microfilm camera? Of the idea of using spy satellites in orbit? That would be like the Eisenhower administration demanding that the secrets of Teddy Roosevelt and the Spanish American war.
If they want it kept secret, or if it isn’t all released without delay, Occam’s razor tells us why.
Posner’s book is really good. Puts the facts to the now mythical lies about the whole thing.