Art is self limiting once you choose a medium. i.e. once you choose a charcoal sketch you have limited yourself to black and white three dimensional lines on particular materials. You can?t charcoal on canvas and expect much of an outcome as you would oil paints on canvas.
A medium has been set for the film.
These are the mediums we know:
Set in the 1950?s
Historically Relevant by standards of Lucas Films
Artifactually Relevant by the standards of Lucas Films
Biblical and Secular Relevance by the standards of Lucas Films
Lucas Films is not breaking the mold.
So you asses the times, possibilities, relevancies, and an educated guess is going to probably cross the line of realism several times.
There are particular entities and events of the 1950?s that are relevant to the archeology and anyone that would have control or interest for the period.
Leaving these facts out of the equation would be like leaving the Nazis out of the war, or elvis out of rock and roll.
Study your history of the 50?s and the relevance of possible artifacts and players, gives this fiction fandom more life as a structured hypothesis. (probably getting closer to real everyday)
So in developing a plot with say the involvement of the CFR is relevant because of its significance to the 1950?s, anyone with money and power was involved. Just as possible manipulation of archeology is significant because for the times it must be relevant, and likely involved to some extent for background development.
Besides, any study for the making of the past three was and has probably been done and completed long before the fact or conception of the DVD?s.
Paul