The film presents a thinly veiled aesop on the dangers of relying too much on technology — which is exactly what modern films have done with the pioneering technology behind the special effects in this film. Ironically, due to its combined use of animatronics and CGI, Jurassic Park has aged very well since its début in 1993 and looks much more realistic than almost all other dinosaur-using movies, including those that rely very heavily or only on CGI special effects.
Probably unintentional, but the second movie makes for a fantastic warning against the dangers of irresponsible activism.
Even better, in the case of inconsistencies with modern dino knowledge (like the absence of feathers), it is mentioned that Dr. Wu had been mixing and matching DNA, then just waiting to see what grew out of it. If it didn't "seem" right based on current knowledge about dinosaurs, he'd go back to the drawing board, and try a few revisions. If Wu had seen some feathered dinos well before anyone knew about them, then why wouldn't he consider it a "glitch"? There's even a line somewhere in the novel about the JP dinos only being as close to actual dinos as they can guess from modern scholarship by folks like Dr. Grant. It seems Crichton wrote in his own defenses against Science Marches On!
In the first film, Nedry has a photograph of J. Robert Oppenheimer taped to his monitor. This is amusingly appropriate considering that Oppenhemier, who worked on the Manhattan Project, felt similarly about the Atomic Bomb that many of the main characters in this movie felt about playing with dinosaur DNA.
In Tresspasser, John Hammond himself even mentions the parallel significance of the impact their work would have on the world with the Bomb.
Hammond: We were planning to conquer time's power over life, its power to extinguish and erase. It would change all our lives, as profoundly, as irrevocably as the atomic bomb.
The first film pioneered new special effects technology. Soon afterwards, films started relying too much on special effects and not enough on their human aspects. This parallels how John Hammond relied too much on technology to run the park and not enough on human beings.
A behind-the-scenes documentary revealed that the exchange between Dr. Grant and Ian Malcolm about the possible future of paleontology ("[I'm thinking] that we're out of a job." "Don't you mean extinct?") was based on a statement made by a member of the film's animatronics crew, who was expressing his fear that CGI would cause practical effects experts to become obsolete in the future.
Every biological inaccuracy shown by the movie and the book can be explained by the fact that the scientists who made the dinosaurs screwed with their genetics and may have even tailored them to fit the expectations of visitors. A nifty way of averting the pitfalls of such a work when Science Marches On.
Jurassic Park's Science Marches On-style of genetics offers some Fridge Horror as well. Considering that the dinosaurs look a bit different and more accurate with each film, InGen may well have euthanized the animals that were proven to be scientifically inaccurate, only to replace them with improved ones.
The film's "velociraptors" have, let's face it, a LOT wrong with them. The size we can chalk up to being a different species mislabeled, but each film depicts them differently, and distinctly un-feathered, something we now know is quite inaccurate. So... in the third one, they gave the male raptors... mohawks. Of feathers. Ok, sure, they're trying. But maybe these changes in the appearance and physiology are the raptors' DNA overtaking the amphibian DNA used in their creation. Each new generation of raptors is becoming more "real", and in a few decades, Isla Sorna will have fully-feathered, scientifically accurate raptors.
Sam Neill said in a making-of for JPIII, when describing the new raptors, "It's almost as if they've evolved."
Not to mention that explains why the Raptors became less and less psychotic.
A neat idea if not for the fact it's practically worthy of being a doctoral thesis in Art Major Biology.
It can be universally agreed on that Nedry is a massive Jerk who brought about his own doom, but take a moment to think of what might have happened if he had never shut the park down like he did. If the events of the first movie/film had not happened like they did (with a relatively small start-up staff and a handful of guests), then such events might have happened much further down the road, when Hammond had opened the park to the general public.
Tim's idolization of Dr. Grant goes to very subtle levels — he's even wearing the same outfit (denim button down shirt, bandana around the neck, white khaki pants, and a brown belt), with minor differences (Tim's shirt's unbottoned, different color bandana, and shorts instead of pants).
In a crossover with Fridge Horror, if Gennaro had been in either of the stalls next to him when the T-Rex crashes into the bathroom, the walls would have collapsed on top of him, possibly saving his life.
Had they collapsed on top of him, the Rex may have rooted around in the debris. If this had happened, it may have found Ian instead of Gennaro!
The "six-foot turkey" comment can hit a sort of "Fridge Humor" note since, in real life, velociraptors were roughly turkey-sized.
And now we have Utahraptor, a giant dromaeosaur (well, giant by dromie standards) about the same size as Jurassic Park's creatures. Six-foot turkey, indeed.
Well, not quite. They may have been the same height, but Utahraptor was a good bit longer than the JP raptors and weighed about twice as much (about the same as a polar bear).
The Dilophosaur displays some rather odd behavior unbecoming of most predators. Rather than stealthily stalk Nedry, she openly regards him while displaying zero aggression. She only goes into attack mode once he turns around and crawls on all fours. This is likely because she took his behavior as that of a wounded animal, causing her predatory instincts to kick in.