Corrected entry: In the scene where they are "rebooting" the computer system, Lex states "I know this, it's a UNIX system." The scene then cuts to a shot of the interface which is a 3D "flyover" interface. There are, at this time, no commercial UNIX systems that employ such an interface, so there was nothing on the screen to let her know what operating system that goofy interface (probably written by Nedry) was attached to.
Corrected entry: After Ian Malcolm is attacked by the T-Rex and thrown into the debris of the destroyed bathroom, he has blood on his face. When Sattler and Muldoon find him, the blood is gone, not a trace left! And it had stopped raining at this point, note Malcolm's dry clothes and the blood still on his leg, there's no way it could've been rinsed away.
Corrected entry: When on the tour, the two cars pass by the T-rex enclosure where they see a goat raised into it from below. Then, they pass by without seeing the dino. Later in the movie they pass by the same enclosure going the opposite way. The cars would continue on their journey and not backtrack. If they did go backwards on the path to get back to the visitor's center, the cars would be facing the other way.
Corrected entry: In the helicopter scene at the beginning of the movie, Malcolm is talking to Dr. Grant and Dr. Sattler and he is deliberately chewing gum as he talks. In the next shot, Malcolm suddenly isn't chewing gum. He then unwraps a piece of gum and places it into his mouth.
Corrected entry: When the crew is preparing to enter the tour trucks, John points out the trucks are powered by the track running below it. When he directs Dr. Sattler and Dr. Grant to enter the vehicle, the entire bottom of the rear truck is visible and no connection to the track is present.
Corrected entry: At the end the T-Rex comes in and saves the day by killing the raptors. Where did he come from? He's huge and no way he could have fit through any of the doors. Second, how come nobody heard him coming? He can be heard many other times during the movie before he shows up. Finally, how come nobody saw him? He's huge and can be seen from a distance.
Corrected entry: When the gang is heading down to the sick Triceratops, Lex trips, and Alan helps her up. Look closely when she trips. It is clear she did it on purpose.
Corrected entry: When they first arrive at the park, they see a brachiosaur feeding on the leaves of a tree. When the dino gets on its hind legs to get a hold of the top branch, it could've easily reached the top branch without taking the extreme energy to lift itself. This counteracts anything that would naturally happen but is used to make the impressive landing that it makes coming down.
Corrected entry: In the scene with the raptor in the kitchen, the raptor breathes on the window and fogs it. But reptiles are cold-blooded, which means their insides, and consequently their breath is the same as the ambient temperature. The glass would not fog.
Corrected entry: In the scene where Dr. Grant and the two kids climb the electrified perimeter fence, just before Dr. Sattler reactivates the power, Dr. Grant can be seen from underneath while climbing. After walking for two days in lots of mud and rain, his shoes are still pretty clean.
Corrected entry: In one of the laboratory scenes there is a Zeiss compound microscope sitting on the work bench. It has a binocular head on backwards and it can't be used that way. (00:27:00)
Corrected entry: At the end, Hammond pulls up in front of the Visitor Center in a jeep with the injured Ian in the back. Hammond is a feeble old man who walks with a cane - how did he manage to get Ian into the jeep?
Corrected entry: When Hammond's visitors are viewing the 'movie' about how DNA is extracted, a hypodermic syringe is shown taking a DNA sample from an amber source. It's clear that the syringe is one used exclusively for a tuberculosis skin test. It's even labeled as such because you can see the word 'tuberculin' on it.
Corrected entry: In the scene where Muldoon and Ellie are looking for the other car, watch in the background when Ellie comes up close to the camera. If you look closely, Muldoon slips and almost falls down.
Corrected entry: The Velociraptors in Jurassic Park are actually larger than the fossil records actually show. Dr. Bakker (who is mentioned by Timmy when they are first getting in the jeeps) was asked for advice on the dinosaurs and he told them the size of velociraptors. Spielberg wanted bigger so they enlarged the raptors. Right before the movie came out, Bakker was at a dig site and a new raptor species was discovered: Utahraptor. It was almost the exact size of Spielberg's raptors for the movie. So, technically, the raptors in JP are Utahraptors. This is all mentioned in a book by Bakker called Raptor Red.
Corrected entry: In the scene where Grant, Ellie, Lex, and Tim are saved by the T. Rex appearing inside the lobby of the main compound and eating the two raptors, how exactly did she (the T. Rex) get in there? All the doors are too small to allow her access and there are no signs of a forced entry anywhere.
Corrected entry: When Hammond's helicopter flies in to the Badlands dig site, somehow he manages to get from the helicopter way up to the trailer without anyone seeing him get out, even though they are all watching it land and Grant and Ellie get to it as soon as it lands.
Corrected entry: Just before turning off the power, Muldoon asks about putting the lysine deficiency into effect. After a bit of talking, Arnold explains it as it being a security measure to prevent the spread of the animals off the island. He goes on to explain that the animals can't manufacture the amino acid lysine, and that if they aren't given a supply of it every 48 hours, they go into a coma and die. Factually, this is incorrect. Humans have the same "faulty enzyme for protein metabolism," yet we aren't dependant on lysine. So why would the animals be?
Corrected entry: On the tour ride at the visitor center, Grant spouts pseudo-scientific pap "How do you interrupt the cellular mitosis?" We'll assume that he's some wonder paleontologist who for some reason knows biochemistry (that's rare) but mitosis is the process of cell division - there is no such thing as non-cellular mitosis (hence no one would ever call it that) and secondly there is no reason you would need to interrupt mitosis.