To summarize, science becomes knowledge by publication of research results. It then may become more general knowledge as writers of textbooks pick and choose what to put in their texts, and as professors and teachers then decide what to stress from those textbooks.
The Hughes H-4 Hercules (also known as the  Spruce Goose ; registration NX37602) is a prototype heavy strategic airlift military transport aircraft designed and built by the Hughes Aircraft Company.oward Hughes was called to testify before the Senate War Investigating Committee in 1947 over the use of government funds for the aircraft. During a Senate hearing on August 6, 1947 (the first of a series of appearances), Hughes said: The Hercules was a monumental undertaking.
It was never used as Air Force One. It was designated as a VC-121B. Thus, the air force had a B model before it had an A model. The A tail numbers: 48-609 -- 617. In 1950 they were sent back to Lockheed to be upgraded to VC-121As to haul VIPs. VC-121B-- Air Force had one B model 48-608 RC-121C--The U. S. Air Force had 10 RC-121Cs with Air Force serial numbers 51-3836 -- 3845.