Are there really "authentic secrets" that have "left little public trace", at least for a time
Are there really "authentic secrets" that have "left little public trace", at least for a time?
I don't believe a vast government concealment program is real. Any evidence I've ever been quoted on this directly is often taken out of context and based on older, unsupported claims.
To address the quoted post, here are some programs that are cited and fit your criteria. I pulled this text from an essay that was shared privately with me, from a paper titled "A Complex Topology Explaining UAP Belief Endurance." I won't share it in full without permission, and it's not directly related to the post. I inserted supported wiki links
This paper develops a structural model for how a body of belief can persist for multiple decades, generate substantial institutional momentum, and resist successive disconfirmations — without anyone actively coordinating the persistence and without any physical referent at the core of the belief.
ULTRA / Bletchley Park (1939-1974)
Over 12,000 people kept the secret of Allied decryption of German military ciphers for three decades after the war ended. Winston Churchill omitted Bletchley from his six-volume history of the Second World War. Hundreds of memoirs by generals, admirals, and civilian leadership stayed silent. Internally, decrypts were laundered through a fictional MI6 spy called "Boniface" with a fictional network of agents in Germany, so field commanders would believe they were receiving human intelligence rather than signals intelligence — but that was internal cover, not a public mythology. Externally, there wasn't an active public cover story; merely a vague public sense that Allied intelligence had performed well.
Tiny fragments did leak into books from the late 1950s onward, but none communicated the scale of what had happened. A computer science professor named Brian Randell first publicly revealed the existence of Colossus in 1972 while preparing a book on the history of computing, and his subsequent campaign to get the broader Bletchley story declassified initially failed. When F.W. Winterbotham's
The Ultra Secret was about to publish in 1974, the British D-Notice Committee couldn't block the American edition, so they allowed a partial authorized account to go out first as a diversionary move.
https://en.wikipedia.org/wiki/Ultra_(cryptography)
Manhattan Project (1942-1945)
The same shape, compressed in time. Approximately 130,000 personnel over three years. Near-zero public discourse. Then disclosure-by-use in August 1945. Workers at Oak Ridge and Hanford famously did not know what they were building. The genuine information penetration that did occur was internal — Klaus Fuchs, Theodore Hall, the Rosenberg ring — and was contents-specific: real espionage went after real contents. No popular mythology grew up around it during classification.
https://en.wikipedia.org/wiki/Manhattan_Project
AZORIAN / Glomar Explorer (1968-1974)
The intermediate case. Six years of an industrial cover story. The Hughes Glomar Explorer was publicly presented as a deep-sea manganese mining vessel, and the cover was largely accepted in the press. A handful of investigative reporters got close but were persuaded to hold. The story broke in 1975 and produced the canonical "Glomar response" to FOIA requests, which is now the legal scaffolding underneath much of modern classification fog.
https://en.wikipedia.org/wiki/Project_Azorian