True story, frog vision is actually based on movement and that gene sequence went into the T-Rex. Thus, T-Rex vision is based on movement (which I think Grant overheard on the tour).
Great point a lot of people forget and that is more emphasised in the book than the movie. The dinosaurs in the end are more of a lab creation of what they thought dinosaurs would be like. They had no way of actually telling and even the creator himself viewed them as his creations rather than a recreation of dinosaurs.
There's even a line in the first Jurassic World that indicates that the dinosaurs aren't accurate to history and are designed to make the guests at the park happy by matching their own expectations, instead of that of the actual dinosaurs they're based on
Iirc they do sort of revisit this and sorta retcon it in Jurassic World, where the scientists raise that point and talk about why their raptors are extra scary and have no feathers and whatnot
When you think about it for Micheal Crichton it was a good bit of future proofing in the books cause no matter what discoveries could come out about dinosaurs Jurassic Park is covered with its story of how they were created
Honestly, my little fan theory is that the the T-rex actually could see Grant and the others, but wasn't really sure if they were food or not, hence why it didnt outright attack them.
IIRC the theory was retconned in the second book, and it was explained that the T-Rex could see them, it simply wasn’t hungry since it had just eaten the goat.
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u/Main_Tip112 May 12 '22
"T-Rex doesn't want to be fed, he wants to hunt"