Vox com has an article on the above subject by Joseph Stromberg. I now quote his article below: On June 9, 2015 the vox com

“In an unbelievable (and one could say almost human) display of intellect and abilities, I. rex does manage to escape, devouring a few park employees in the process. Owen’s keen understanding of similar behavior in raptors makes him uniquely suited to the position of helping the park keep the visitors safe. His suggestions are often ignored for more conservative measures that would keep an oblivious crowd and investors from ever hearing of such a breach, causing the attempts of park security to be woefully inadequate, such as using stun guns and nets in the first attempt, resulting in the most violent scene in the movie.

• “In an unbelievable (and one could say almost human) display of intellect and abilities, I. rex does manage to escape, devouring a few park employees in the process. Owen’s keen understanding of similar behavior in raptors makes him uniquely suited to the position of helping the park keep the visitors safe. His suggestions are often ignored for more conservative measures that would keep an oblivious crowd and investors from ever hearing of such a breach, causing the attempts of park security to be woefully inadequate, such as using stun guns and nets in the first attempt, resulting in the most violent scene in the movie.

“The movie then launches into a “perfect storm” of sorts where everything that can go wrong does, much like in Jurassic Park, but without the invocation of Chaos Theory that Ian Malcolm predicted in the original novel. In fact, the movie itself is generous with references back to the original movie. In a close parallel with Jurassic Park, it is now Claire and the park manager’s nephews, rather than Hammond and his grandchildren, that are somehow always in harm’s way, with Owen Grady suggesting that their problems are due to seeing these thinking, feeling, and hungry animals as “assets.” Perhaps that is why Claire and Owen stop and spend time mourning the last few moments of an Apatosaurus victim of I. rex’s rampage while on the way to rescue the nephews out on their own in a bulletproof but not quite dinosaur-proof gyroball.

• “The movie then launches into a “perfect storm” of sorts where everything that can go wrong does, much like in Jurassic Park, but without the invocation of Chaos Theory that Ian Malcolm predicted in the original novel. In fact, the movie itself is generous with references back to the original movie. In a close parallel with Jurassic Park, it is now Claire and the park manager’s nephews, rather than Hammond and his grandchildren, that are somehow always in harm’s way, with Owen Grady suggesting that their problems are due to seeing these thinking, feeling, and hungry animals as “assets.” Perhaps that is why Claire and Owen stop and spend time mourning the last few moments of an Apatosaurus victim of I. rex’s rampage while on the way to rescue the nephews out on their own in a bulletproof but not quite dinosaur-proof gyroball.

“The children do eventually make it back through their own ingenuity (and a few more “suspend disbelief” mechanisms). Concurrently, more aggressive orchestrated dinosaur containment measures are employed and result in failure, including a breach of the aviary that sends Pteranodons and Dimorphodons fleeing in terror toward the still-unsuspecting park visitors. Upon seeing the panicking crowd, apparently the flying reptiles switch from flight to feed and begin attacking the visitors. The park’s security quickly contains this relatively small threat compared to what’s coming.

• “The children do eventually make it back through their own ingenuity (and a few more “suspend disbelief” mechanisms). Concurrently, more aggressive orchestrated dinosaur containment measures are employed and result in failure, including a breach of the aviary that sends Pteranodons and Dimorphodons fleeing in terror toward the still-unsuspecting park visitors. Upon seeing the panicking crowd, apparently the flying reptiles switch from flight to feed and begin attacking the visitors. The park’s security quickly contains this relatively small threat compared to what’s coming.

“It becomes obvious that drastic and objectionable measures need to be taken to stop I. rex’s continual march toward park guests, spurred by its thermal sensory and camouflage abilities, despite the several-mile distance and tropical climate, which would seem to negate these abilities. Trained Velicoraptors are brought in to hunt I. rex, resulting in even greater catastrophe but buys enough time to get the park visitors to safety. In the climax, T. rex is employed as well, and for those curious as to how I. rex compares, it could be likened to a heavyweight vs. a middleweight boxer. Trying to keep spoilers to a minimum, we’ll say it’s a super-heavyweight that wins the match. The survivors of the fight, including a raptor and Owen, Claire, and the boys, walk away from each other in seeming mutual respect. Other survivors evacuated from the island include many of the park workers, such as the lab personnel and frozen dinosaur embryos of undisclosed variety. Most of the animals are assumed to be now open to survival of the fittest as at least some of the protected areas for herbivores had been breached by the I. rex and other carnivores are on the loose.

• “It becomes obvious that drastic and objectionable measures need to be taken to stop I. rex’s continual march toward park guests, spurred by its thermal sensory and camouflage abilities, despite the several-mile distance and tropical climate, which would seem to negate these abilities. Trained Velicoraptors are brought in to hunt I. rex, resulting in even greater catastrophe but buys enough time to get the park visitors to safety. In the climax, T. rex is employed as well, and for those curious as to how I. rex compares, it could be likened to a heavyweight vs. a middleweight boxer. Trying to keep spoilers to a minimum, we’ll say it’s a super-heavyweight that wins the match. The survivors of the fight, including a raptor and Owen, Claire, and the boys, walk away from each other in seeming mutual respect. Other survivors evacuated from the island include many of the park workers, such as the lab personnel and frozen dinosaur embryos of undisclosed variety. Most of the animals are assumed to be now open to survival of the fittest as at least some of the protected areas for herbivores had been breached by the I. rex and other carnivores are on the loose.