I just read this relavent-to-the-destruction-of-the-9/11 Truth Movement quote in Paul Krassner's excellent book Murder at the Conspiracy Convention. Almost everyone here will love the self-titled chapter in this book. In part of that chapter, Krassner interviews Michael Aquino, who was a high-ranking DIA PSYOP officer that retired in 1994. I have no idea about Aquino's guilt in the Presidio case as I have not studied it. Aquino told Krassner:
"Part of what we learned in PSYOP was that it's not just the propaganda you create that is a factor, but the pre-existing propaganda 'filters' in target audiences' brains as well. The key has to be designed to fit the lock, so to speak. And underlying all this is the challenge to the PSYOPerator to extricate himself from his own filters; otherwise he will see the situation only through his personal distortions and thus be inept at influencing it objectively and comprehensively."