You know the scene when Dr. Alan Grant and the rest of them jump out of the jeep to see the huge dinosaur walking across the plain? They're standing about 50 feet away from the animal, but even at that distance, for an animal to walk the ground, there should some kind of vibration or shake or something! I mean, this animal in all its hugeness in stomping on the ground, yet none of them are shaking! And then, when it sits up on its hind legs, and slams back down on the ground, not one of them is shaken.