If that's true then it's opposite of the '78 film, which would be bad, imo. I don't mind a slow beginning to help set the backstory or characters etc. but having it be the other way around is no good...well, I'll try to see this film during the day next week.
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Movies do this all the time, to good effect as far as I'm concerned. The beginning is often quick and entertaining, as it provides the hook for the viewer that catches his interest.