Harmy said:
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About Campbell, as far as I know, Lucas using his stuff when writing the first SW is a bit of a myth, actually I think Lucas hasn't actually read Campbell's works until after the 1st SW came out.
Ah, maybe. I've been told once by an old friend of mine who's a fan of Campbell that Lucas didn't especialy read him but rather met him asking for help. But this is to be verified indeed.