"I asked NASA Watch's Keith Cowing about this, and he explained that this is just an urban legend. The schematics are all still around, mostly on microfiche, and any ancient computer files just hold images of the original plans as opposed to now unreadably obsolete data. Still, while the knowledge wasn't lost, it was certainly forgotten, and worse, it was badly organized. As Cowing - himself working on the rediscovery of old NASA documents with the Lunar Orbiter Image Recovery Project - told me, all this archival information was basically abandoned until NASA's started working on the Constellation program last decade, and now that that project has been forgotten the information is again beginning to gather dust. If there is a point of disconnect, it's more in terms of how we understand the information and the different ways in which we approach science forty-five years on"
"If anything's missing, it's actually more the explanation. I mean there is some stuff that will never be found again, but it's all there, and the stuff that isn't you can sort of figure out backwards. Sometimes you need the equivalent of a Rosetta Stone, because sometimes the way we think today is not the way they thought back then. Sometimes you need an index or a document that explains how they did things or their nomenclature. That's the one thing that's sometimes hard to find is what I call a bridge document, an answer guide to how they did the thing back in the sixties. There's no FAQ."