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in addition to historical inaccuracies one of the many fun things to look for in film is what are termed "continuity errors"
years ago began to watch the video of the picture Mystic Pizza with an ensemble cast which included Julia Roberts
she plays a waitress in the eponymous pizza place in...you guessed it(!)...Mystic Connecticut
early in the motion picture there is a scene where she is filling a beer pitcher from the tap
when she departs the tap the pitcher is about 3/5 full but when she arrives at the customer's table an instant later it is magically full
heard an interview with James Garner where the interviewer asked him what was his least favourite picture
not the slightest hesitation on his part; quickly responded The Pink Jungle (1969)
he was so unhappy on the set that he made deliberate continuity errors with his wardrobe or what he was carrying to render the scenes of no use to the film makers - they used them anyway
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