Jurassic World Dominion (2022)

Suggested correction: A different interpretation is that the deer knows the difference in the sounds - gurgling/roars of an approaching herbivore versus carnivore - so it didn't perceive it as a threat until it got unusually close (so the deer looked to see why). The dinosaur flung the deer aside, then proceeded to eat the vegetation where the deer was. It isn't likely that the dinosaur (if a carnivore) would toss aside a fresh deer meat brunch in favor of some green brush.

KeyZOid

Answer: The live dinosaurs are genetically tweaked recreations, they're not the "pure" dinosaurs of the past, which would still be of great interest. Plus just like any other archaeology or historical study, there's always more to be learned about the past, and a great many people are interested in what the past has to teach us.

Answer: Agree with the other answer but would add that while to date about 1000 species of dinosaurs have been identified, it is believed there are at least 1,000 more types that existed and are still to be discovered and studied. Only a tiny fraction of the known species were cloned by In-Gen and Biosyn, and, as noted in the other answer, they are not genetically pure. Also, there is much to learn about dinosaurs' habitat, range, species evolution and decline, mating habits, health and diet, the existing climate at the time, and so on. That would be why paleontologists like Alan Grant continue digging.

raywest ★

Answer: The existing answers are good. In the movie, Alan Grant actually asked, "Why do we dig?" and answered his question, "Because paleontology is science [fossil animals and plants], and science is about the truth. And there is truth in these rocks." [00:20:52].

KeyZOid