| http://www.w3.org/ns/prov#value | - OK... 1) Even the smartest people make mistakes on some details (e.g. - Doom comes to mind) - especially if they are going out into the unknown (space in 1961). 2) As has been mentioned in their introduction in 1961 the idea of shielding in space (or even effectively going into space was a totally new idea - the first person into space Yuri Gargarin had only gone into space in April of 1961 and th
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