User blog comment:EvilLamp/Nedry/@comment-7455247-20160207231049

Dennis Nedry is not simply an obnoxious jerk, he is a criminal : He betrayed John Hammond by stealing his dinosaur embryos in order to sell them to Lewis Dodgson, and he caused most of the problems of the film (maybe he didn't expect that the dinosaurs will kill people, he he still wanted to cause troubles to facilitate his escape.