James Cameron hasn't directed a movie since 2009, and the fact that he's returning with "Avatar: The Way of Water," a sequel to the highest-grossing movie of all time, raises the expectations for his new film even higher.

Despite the first "Avatar" film's financial success, the cultural relevance and staying power in the hearts and minds of viewers has waned. And it should be safe to assume that for "The Way of Water" to find similar success to its predecessor, it needs to do more than...

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