This is entirely too big a topic to be handled in even a couple of posts. You really do have to read the book to appreciate how fully screwed over it was by the movie. As I’ve said before, in several threads (including one currently up), the movie has talen so many of Heinlein’s things – philosophy, scientiofic accuracy, story, position of the military – and flipped them by 1890 degrees that this is the hugest mismatch between the original source and the resulting film. And I include everything you wanted to know about sex in that blanket statement.
Heinlein’s novel was, he claims, originally intended as a juvenile, although I kinda suspect he didn’t really mean it. He was having lots of disagreements with his publisher of many years, and it wouldn’t surprise me to learn that he consciously or unconsciously wrote this in a way to piss them off and end the relationship. Nothing extant supports that interpretation, AFAIK, but there’s little doubt that he knew of the explosive nature of his book. He’d covered the same sort of ground earlier with his (definitely juvenile) novel Space Cadet, with his story of the raw recruit who becomes a soldier, but there’s a difference between the two.
Heinlein has also liked playing with models of government (and of economies), throughout his career – look at Tunnel in the Sky, or the essays in Expanded Universe, or the various proposals in The Moon is a Harsh Mistress – but the system he came up with for Starship Troopers is, I strongly suspect, one dear to his heart. For one thing it’s the only one of his proposed polities that he subsequently argued about and defended. Requiring your prospective voters to pay for the privilege, or to solve a quadriatic equation sounds like a fun exercise, but requiring public service has a practical ring to it that, I suspect, really appealed to Heinlein the military man.
The novel isn’t perfect – it’s gotten plenty of criticism through the years, and you can find some of it on the Net. Heck, just look up Alexei Panshin’s website. James Blish and Alexei Panshin took Heinlein to task over his story, and you can read their comments. I suspect screenwriter Neumeier did, because he plays the opening exactly as Panshin describes it – like a Recruiting Film.
I agree that there are problems with Heinlein’s book, but I also agree that it’s an incredible piece of writing. I’ve got it on audiodisc in my car. Heinlein writes about his “mobile infantry” as if it’s real, and his descriptions not only of the weapons and the way they work convincing, so are the strategy and tactics of using them.
So when Veerhoeven has the MI go down with its non-Power-Suited soldiers to a planet literally crawling with tank-like armored Bugs that require multiple shots to disable, you know that he’s severely misrepresenting the book. That would require a monumental death-wish among the military commanders, or a desire for pointless human massacre. The bugs in Heinlein’s book are about 6’ in size, both workers and soldiers, and the Brain Bugs (which don’t have brain-sucking appendages coming out of suspiciously sex-organ shaped openings) are about the same size. The MI really does have a fighting chance. If they encountered anything like the movie shows, they really would have nuked the site from orbit.
Heinlein’s instructors are a lot less brutal than what was onscreen – Instructor Zim in the film is shgwn deliberately breaking the recruit’s arm, and putting a throwing knife through another’s hand to illustrate a point. These are downright perversions of the events described in the book – as bad as having Harry Gondorf in The Sting making a point by pulling out a gun and blowing away Ray Walston, say.
Lastly, the scientific illiteracy of the film really rankles, seeing as Heinlein was one of the best writers for keeping to scientific accuracy (within the limita allowed by the “imaginary science” that made the story possible in the first place), without being heavy-handed about it. Heinlein himself said in one of his books about how it’s easy to tell in space if you’re on a collision course with something (its relative bearing doesn’t change) and what you can do to prevent a collision (practicall any course shift, provided it’s made early enough). So when they have the Rodger Young just barely avoiding a massive collision with a Bug Asteroid it’s adding insult to injury. Carmen Ibanez, rather than being one of the best up-and-coming pilots, should be seen as a rank amateur for allowing such a situation to develop. Her captain, Deladier, ought to be up for review herself for letting such an incompetant run the ship. And the damned asteroid – shot out by mechancal forces a third of a galaxy from Earth – ought never to be a danger to the solar system within human lifetimes. That this took out their communications tower, preventing them from cmmunicating with Earth about the approaching asteroid, is so unbelievably clumsy an explanation for how this could have come upon mankind without warning that these guys ought never to make another science fiction film. (Gee, you don’t think that the forces involved in bouncing off a starship, multiplied by distances measured in light years, would result in the asteroid missing not merely the earth, but also the entire solar system, do you?)
It’s jusy mind-bogglingly unbelievably stupid. Worse, it’s insultingly stupid. It’s as if, in the movie Master and Commander, the screenwriter and director had Captain Aubrey cleverly make his ship go faster by having his men exhaling into the sails, and fanning them. It’s as if they had Maturin performing surgery with acupuncture and magic, and hypnotizing the men to make them more obedient to Aubrey. And then, to top it off, it’s as if they had these military men of the sea making up their own orders, and using their ship to storm Denver, Colorado. You’d be a bit peeved about a film like that, and who could blame you? And if somebody asked you where it diverged from Patrick O’Brien’s books, you’d say “Where do I begin?”