Continuity mistake: At the very beginning, when you see the English family on the beach, the little girl wanders off and you then see a shot of her on her own. However, she must have walked a pretty long way because the beach she is on is definitely not the beach that her parents were on; the rocks in the ocean are gone and the waves are smaller. (00:02:00)
Continuity mistake: When the English family arrives at the island, the sky is a bit gray. When the little girl wanders off, it is suddenly a sunny, beautiful day. (00:02:05)
Continuity mistake: When the girl holds the sandwich, the napkin around it changes size and position between shots. (00:02:20)
Continuity mistake: When the movie starts and the little girl is surrounded by mini dinosaurs, her father lowers his Financial Times newspaper twice. First in the closeup he lowers it to his lap, and then at the start of the next wideshot the newspaper is back up in front of his face when he lowers it again before it drops onto the sand. (00:02:40)
Continuity mistake: When the girl meets the mini dinosaur she is standing on the sand, parallel to the edge of the grass. A frame later she's half a meter away, perpendicular to the grass. (00:02:50)
Continuity mistake: When Ian starts to walk out of Dr. Hammond's office, we see an empty hallway. A shot or two later, there is a butler standing to the left of a lamp in the middle of the hallway. Then another shot or two later, the butler is standing to the left of the hallway where we can't see him. (00:13:50)
Continuity mistake: When the crew are looking for Sarah, Eddie is holding the tracker and Ian is holding the rifle. In the next wide shot where they watch the Stegosaurus cross the river Eddie is now holding the rifle and Ian the tracker and the bag. The scene cuts again to the close up and Eddie is again holding the tracker. (00:22:00)
Continuity mistake: When Sarah walks through the water when she sees Malcolm for the first time on the island her pants are soaked up to mid thigh, in the next scene she is running through the water again and her pants are only soaked up to her knees. (00:24:15)
Continuity mistake: Towards the beginning where the girl goes to photograph the Stegosaurus, the scene cuts back to her boyfriend and the guy with the video camera. In two cuts to their scene while the girl is photographing and interacting with Stegosaurus, the guy with the video camera opens the flip out LCD on the video camera and starts shooting the action. (00:24:50)
Continuity mistake: When Sarah, Malcom and his daughter argue in the trailer for the first time you can see out of the back window. It shows they are right in front of a thicket of trees a few feet behind the trailer. When they step outside a minute later to see the InGen choppers arrive you see that the trailer is pulled up on the cliff tops already. The only view you should have seen out of that window was open sky as the window points out to sea. (00:32:10)
Continuity mistake: When the second INGEN team is rolling through the open field and you first see Rolland talking to Peter about not setting up camp on the game trail, if you look carefully in the shot looking at Peter they are actually on a paved road instead of open field. Split second mistake. (00:32:55)
Continuity mistake: When Rowland and the other man spot the baby T-rex, it is eating its meal. Then it looks up at them. Then it cuts to another shot where Rowland and the other man are talking. If you look in the background you can see the baby with his head down eating again. Then it cuts back to where the baby is. It is looking up at them again. (00:39:30)
Continuity mistake: In the scene where Sarah is helping the baby T-rex in the trailer and Ian is trying to dial up their ship on the radio, look at the papers Ian is holding. In one shot the back page is white, but in the very next shot, it has a red cover on the back. (00:49:20)
Continuity mistake: The night when the T-Rexes attack it is pouring and there is mud all over, but the next morning the grass is dry and not even in the forest is there any mud or rain puddles. (00:51:25 - 01:09:00)
Continuity mistake: When Sarah gets those cuts on her head, they seem to dissappear or get smaller in number as the movie progresses. (01:03:15 - 01:18:05)
Continuity mistake: The day after the T-Rex attack, when they are all walking towards the control complex, Sarah is asked about the blood on her shirt, and answers that it's from last night, but it's too humid for the blood to dry. Nevertheless all their clothes - which ought to have been soaked during the rain storm, are completely dry. (01:09:40)
Continuity mistake: When the T-Rexes are far away their steps make the ground shudder so it can be seen in the water puddles. However when they are nearby the same does not occur. (01:17:35)
Continuity mistake: The tent scene in which Sarah and Kelly are sleeping, wrappers from cookies or food are in the first shot. When the angle changes the wrappers are gone, but Sarah hides the reappearance of the wrappers in the next shot. (01:18:50)
Continuity mistake: When Sarah looks up at her jacket, the bag of snacks is on the opposite side of Kelly. The bag is closed and the chocolate bars are unopened. Also, there are no crumbs between the two characters. But as the T-Rex is approaching, Sarah is gathering the now opened snacks and dusting crumbs off the top of their sleeping bag that was not there in the overhead shot. (01:21:29)
Continuity mistake: As the camera pans from Ian to the tent, Sarah, the lantern is out and the front flaps are open/tied back. From the interior shots, that lantern is still lit and the flaps are hanging loose. (01:21:39 - 01:22:07)
Answer: It's basically about facing one's own mortality. Many humans feel that they 'feel the most alive' when facing (and overcoming) dangerous situations, the more challenging, the better. Roland is a big game hunter, to him, the ultimate challenge would be to hunt the biggest and (presumably) most dangerous predator ever to exist. Facing the danger of the T. Rex would make him feel better and mightier than he had ever felt in his life.
Twotall