Someone may have already pointed this out, but I think it is worth carefully looking at the language in the memos. I have not read all of the memos, but someone said one of the memos uses the term "feedback". When did that cliche come into general use?
I suppose there ware slang dictionaries in 1972. Anyone got time to go to a large library and see?
Yep, feedback was a comman military term back then and now