How is this 'based upon' the book?
I recently saw this movie after having read the book a few months back. First, the book - excellent, one of the best I have read. The movie - mediocre in its own right, and horrible in its adaptation of the novel.
Spoilers herein
The book's story and main elements include Robinson's failure to take heed of his father's words and his resulting calamities - first getting caught by pirates, and later on gettin shipwrecked on his island in the Carribean. The story is one of conversion; at first he doesn't care much for religion, yet after he considereds the sorry state he is in he comes to realize his fortune, particularly in that he has most everything provided for in his "kingdom". I think there are probably contemporary philosophical elements in the novel, such as his "entering the state of nature" on his island, and his attempts to bring "civilization" to a deserted island.
The movie, then, doesn't attempt to reproduce Robinson's initial predicament; rather, there's a love story involved, and Robinson gets shipwrecked in the South Pacific while circling the globe. While there are of course similarities to the book, the movie Robinson departs significantly in his relationship with Friday. In the book, Friday becomes indebted to Robinson for saving his life; in the movie, Friday is much less subversive and more challenging. He is less humble than the book Friday, which makes him less interesting. Particularly "stupid" is where Robinson says to himself that he doesn't really know whose deity is the real one - his or Friday's pagan god.
While the movie could have reproduced the story in the novel in regards to Robinson's and Friday's relationship, it instead uses modern-day values that it projects onto the story. Not only is this a twisting of the story of Robinson Crusoe, but it is a sappy technique not seldomly used in movies nowadays (e.g. see the white people and the slaves partying together at the wedding feast in The Patriot). This kind of thing makes movies "incredible" in the sense that they become less believable and less enjoyable.
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