I've seen quite a few movies and read a fair amount of books, but never have I ever come across a film so different than its original source material.
Here's what you need to know about the book- it's different. Way different. After reading Jurassic Park, Steven Spielberg took the basic scientific principals from the book to create his own dino tale. The science behind Jurassic Park is phenomenally done, even if you don't completely understand the basic concepts. The idea was to extract dino DNA from bloodsucking insects that got trapped in tree sap during the Jurassic period. The scientists of Hammond's lab then took this DNA and filled in the missing places with amphibian and avian DNA. This caused the dinosaurs that were genetically modified to have traits of both dinosaurs and modern day creatures. This entire project was funded by billionaire John Hammond. Hammond's idea was simple- he wanted to be able to fund genetic research, but the only way to do so profitably was to create entertainment out of it hence Jurassic Park. After doing mild research, Hammond's team of geneticists, zoo wranglers, and park management specialists set out to bring the dinosaurs back to life. Four years after beginning to work, small strange animals started to show up on other Costa Rican islands near Hammond's island where the dinos were being grown. These lizard like creatures attack a little girl and started attacking cribs at night increasing the number of infant deaths on the islands. DNA and samples were sent to labs in order to try to identify the creatures. X-rays of the remains of one of these lizards made it to Allan Grant, a paleontologist who specialized in baby dinosaurs and nests. Not long after receiving this information, Grant was called by John Hammond, who had been a finical supporter of Alan's research. Hammond convinced Grant to come and visit his island theme park and do an inspection to see if the island was safe for guests. Grant, and his young assistant Ellie Sattler, hopped on a plane for the Costa Rican Island along with a mathematician and a lawyer. Their introduction to the attractions of the island is almost immediate as they land their chopper. The dinosaurs are of immediate interest to the specialists as are the technics that helped foster the growth and development of these creatures. Meanwhile, Dennis Nedry, a computer specialist hired to work out the bugs in Hammond's system, is hired by a competitor to steal dino embryos to give to this other company. He plans to accomplish this that very night before a storm hits the island and makes the boat that is supposed to receive these embryos have to ship out. Joined by Hammond's grandkids, Lex and Tim, the group head out on a tour. They are introduced to a multitude of animals as well as technology before stopping the tour to see a sick animal and meet with the vet on hand Dr. Harding. Sattler and the lawyer decide to stay behind with the vet to help with the dinosaur in trouble and the rest of the tour continues. The storm is moving in so Nedry decides to enact his plan. He expertly launches a computer program that will erase his tracks and steals the embryos. As he drives out to the boat he is attack and killed by dinosaurs making it impossible for him to go back to the control room to stop his computer program which has in the meantime shut down the ride. Tim, Lex, Dr. Grant, a tour guide named Ed,and the mathematician Malcolm are all trapped in their vehicles by the t-rex padlock and it's starting to rain. Because the power is going out on the rides with no way to fix it, the electric fences have also gone out. The cars have attracted the attention of rexy who is now free to leave her fence because it is no longer electrified. Ed runs for the hills leaving Lex and Tim alone in their car and also susceptible to the dinosaur now that his motion has peaked rexy's interest. The t-rex attacks the vehicle throwing Lex and Tim in different directions. Malcolm tries to run and escape only to get bit and Dr. Grant doesn't move, seeing that motion attracts the dinosaur. He is tossed to the side when the dinosaur throws the vehicle, but is otherwise untouched. Meanwhile, in the control room Wu, the lead geneticist, and computer park manager Arnold are trying to get the system back up and running, but are having trouble breaking through Nedry's code. Ellie, the lawyer, and Harding all drive back to the hub after failing to make it to the other vehicles to rescue the stranded group. Because all the tech is down, no one knows what anyone else is doing. The dinosaurs could be running loose, so park "wrangler" Muloon heads out to find the kids and company to bring them back taking the lawyer with him. All they manage to find is Ed's torn leg and the body of Malcolm who is severally injured. They return to base. Lex, Tim, and Grant have all found each other and are attempting to find shelter for the night. They manage to make it into a maintenance shack to wait out the night. The next morning they try to get back to the base without being attacked by the t-rex that has been hot on their trail the entire time. By this point it is day again, and the maintenance crew is cleaning up the park with no sign of Grant and the kids. They manage to get the computer systems back on line, but are unable to keep it running long because their backup generator runs out of juice. In order to get everything back on, they have to go to a separate shack and reboot the system. However, at this point they realize the fences have been down for quite some time meaning that the most dreaded animals on the island, the velociraptors, have escaped. Arnold sets out to find the power shack while Wu runs the computers preparing for a reboot, Ellie stays with Malcolm, Hammond paces nervously thinking about the expense, and Muloon and the lawyer run security protecting Arnold from the raptors. Unfortunately, they don't do their job so well and Arnold is killed. The lawyer goes to switch it on only to be trapped by the dinosaur forcing him to hide in the trunk of a car. By this time, Grant, Lex, and Tim have made it back to camp. When the group was unable to turn the power on, they retreated to Malcolm's room where they are now hiding out from the raptors. After acquiring a radio, Grant is able to make contact with them, and they inform him of where he needs to go to turn the power back on. Lex and Tim hide in the cafeteria where they are attacked by a velociraptor which they then trap in a freezer. Grant manages to turn back on the power and rescues the lawyer. Tim and Lex, now in the control room, attempt to get the security systems back up and running so that they can save the people in Malcolm's room from being attacked. The tension is very high. More velociraptor's enter the base building forcing Lex and Tim out of the safety of the control room and into the labs where they once again meet up with Grant who is able to fight off the raptors. The group runs back to the control room and arms the security systems which allows the Malcolm group to electrocute the raptors trying to get into their room. Everything seems restored, until they realize that the velociraptors have been breeding. Originally, the island had only female dinosaurs, but as time went on, some of the dinosaurs changed sex so that they could breed. Grant found egg remnants and a young male raptor while in the jungle. What's worse is when they are rescued, reports reach them that strange creatures have managed to migrate to other islands. The dinos managed to escape. And that's just the book.
The movie is an entirely different plot all together. It is a simplified version which manages to retain the science while still making it simple enough for the audience to understand. The characters of the film are entirely different. In the novel, Alan Grant openly admits how much he likes hanging out with kids and is naturally drawn to Tim and Lex as pals on the tour. He enjoys explaining things to them and babbles with Tim about dinosaurs. In the film, it is very evident from the beginning how much Grant hates children. In an encounter with a teen, Grant terrifies him with horror tales of velociraptors just so he can get the kid to shut up. Grant's focus in the film is also shifted as he spends most of his time looking for raptors, not baby dino nests. Ellie Sattler is also a different caliber in the film. In the novel, Sattler is a 24 yr old student who is engaged to a "nice doctor from Chicago", but in the film her character was aged so that a relationship could be easily conceived by the audience between her and Grant. Hammond comes across as a lovely old grandfather who simply wants to put smiles on children's faces in the film. Hammond as created by Crichton is entirely different. He openly admits he's in the industry to make lots of cash. His frustration grows as the specialists criticize his park. He even meets an untimely death in the novel, a concept that wouldn't be explored in the film. You can't kill Colonel Sanders meets Bill Gates Grandpa. It would be wrong. Lex in the novel is around six years old making Tim the older brother. Lex serves as a constant annoying voice as she complains for most of the novel about being hungry (as most 6 yr olds do). Tim is the older brother and is the one to figure out the computer system in the novel. His character is much more valuable in the novel. The film reverses the age gap and gives half of Tim's contributions to the older sister. Novel lawyer vs. film lawyer is also a completely different character. In the novel, though he is frightened, the lawyer, named Gennaro, offers to help Muloon as much as he can. He goes off to help retrieve the kids and holds the rounds for Muloon's tranquilizer gun when they go raptor hunting. His city slicker attitude in the film manages to make a scary/hilarious scene with him hiding in a toilet at the time of his end. The film focuses on the velociraptors as villains. They are smart and are able to attack easily in smaller spaces. However, in the novel, the T-rex is the original obstacle. It chases Grant, Lex, and Tim throughout the entire park before falling to Muloon's tranquilizer gun. It causes them more fright as it chases them for 75% of the story. The raptors, though mentioned, are only the adversaries for the last two iterations of the novel.
Though these differences are great, and the two tales are immensely different, they still come from the same concept making them worthy of comparison. I grew op on the Jurassic Park films (even the bad sequels). I will always prefer that storyline to that of the novel. The novel seems drawn out and focuses more on Malcolm's theories and the computer aspect of the park. The film is more streamline and offers more tension when it comes to run ins with dinos. That being said, the novel is still great material for the film to draw from. It's just very, very different.
In the 1993 Steven Spielberg film, Dr. Alan Grant and Dr. Ellie Sattler (who mind you are in a relationship) are brought in by Jurassic Park owner/creator John Hammond. Their expertise is to be used to sign off on the park and keep the lawyers at bay. Once they arrive on the island, along with mathematician Dr. Ian Malcolm, they are immediately shocked and conflicted at the sight of dinosaurs. Their wonder is clear when they first come face to face with the animals, but Dr. Malcolm quickly attempts to dissuade Hammond from opening the park by telling him that life cannot be contained. All of the animals in Jurassic Park are genetically engineered as females, but as an expert in chaos theory, Malcolm is convinced that will not be enough to stop the animals from evolving and overrunning the island. Before they begin the official tour of the island, Hammond's grandkids, Lex and Tim (in this version Lex is older than Tim), arrive to provide some insight on the demographic that Hammond is trying to sell Jurassic Park to. The tour is slow going with none of the dinosaurs being visible until the group runs into a sick dinosaur and the vet which separates the group. Dr. Sattler stays with the animal only to return to the visitor center while the rest of the group continues on the tour. Like in the novel, Dennis Nedry, computer programmer, has been hired by an outside company to steal DNA samples from the facility's storage. During the middle of the tour as a large storm is rolling in, Dennis executes a computer program which will allow him to steal the samples without being seen by turning off the security measures and electricity systematically. Dennis is escaping the facility while the tour is stopped by lack of power right outside the T-rex paddock. This unexpected stop and power loss leads the release of the powerful T-rex. In separate vehicles, Tim and Lex are on their own while Malcolm and Grant aren't far behind. The T-rex targets Tim and Lex's vehicle which prompts Grant (who hates kids by the way) to rescue the two of them while Malcolm distracts the dinosaur. Grant, now with Lex and Tim in tow, takes the group farther into the jungle like state of the park while Malcolm is left injured at the scene of the escape. When Sattler and the park ranger, Muldoon, drive in to save the stranded group, all they can find is injured Malcolm. The next mission is to get the power systems back up and running. This will require a total system shutdown and reboot which can only be turned back on in the maintenance shed out of the control center. Sattler is forced to run to the shed in an attempt to reboot the system. She comes face to face with an escaped velociraptor, the deadliest of the dinos in the park. Meanwhile, the Grant and kids crew manage to make it back to the visitor's center. Grant goes to look for Ellie while Lex and Tim are hiding out in the kitchen area. They are soon under attack by the other velociraptors. Grant, Ellie, Tim, and Lex all have to manage to evade the velociraptors and turn on the computer systems so that Hammond and Malcolm, hiding the secure bunker, can call for rescue.
Out of 27 nominations overall, Jurassic Park won 16 awards, including 3 Oscars for Best Sound Effects (editing), Best Visual Effects, and Best Sound. The screenplay was adapted by the author of the novel itself, Michael Crichton. After this film, sequels were spawned using the similar idea of corporate greed taking over the moral applications of the power to genetically engineer. This is represented in this film by the lawyer's fascination with the amount of revenue which could be created by selling expensive tickets as well as merchandise. This prompts him to be lenient towards the park, whereas in contrast, the experts such as Sattler, Malcolm, and Grant point out the flaws and consequences which could come about from wielding the power to genetically recreate extinct animals (and ecosystems). The film also (very briefly) touches on the idea of sexism. Sattler makes two comments in particular that bring some feminism to the film. The first is after Malcolm's speil about how God created dinosaurs, God destroyed dinosaurs, God created man, man destroyed God, man created dinosaurs. Sattler quickly quips back "Dinosaur eats man and women inherit the Earth." She again has a chance to speak up about her gender when Hammond suggests that he should be the one to run to the shed to reboot the system because he is the man in the situation. Ellie gives him a look and promises to debate sexism at a later time.
When discussing summer blockbusters, Jurassic Park is often accredited for helping pave the way (though the first was Jaws in 1975). Since that time, films such as the recent Marvel series and other franchises have made great success of the genre. Many call Jurassic Park a "perfect movie" (though if you'll notice there is a goof with the opening and closing of a car door in the T-rex attack scene as it is open in one shot, closed in the next, and so on until the character deliberately pulls it shut). 20 some years after the film's debut, it is still considered a classic (and a personal favorite).