Jurassic Park had'nt watched it in decades since the first time watched it in the cinema heck that was impressive lol
Was mortified about the realities though of some of them what Paleontologists least believe (not sure if its actual fact or not think some could be) the velicirators likely werent any bigger than an average chicken or at most a turkey (its believed T-Rex was related to what are now chickens even but about least 100ft tall though lol and their vision was unlikely to have been based on movement) feathers and all (especially on their forelimbs
When the electric fences were turned off all they were doing was investigating the environment then likely the producers would have thought its predatory instincts (if it were real lol) would have kicked in
About its vision likely would have had the vision least of a hawk if not greater their angle of vision would have been huge and they suppose it may have got larger as they're eyes were supposedly to have grown if thats actually the case or not is unknown I think
All the films came from was when some dig somewhere they'd discovered amber (fossilised tree sap) with least one mosquito in it, did some testing on what was inside it and believe it to have contained some form of as such Dino-DNA but wont by any chance at all be complete merely traces of what was supposedly yeah.... as for that ever happening nah, is why the writer of the book decided to write it and then the film based somewhat on it came out