Having just rewatched Jurassic Park the other night for the first time since I was about 6 years old, my takeaway was mostly that the park needed a total overhaul of their EH&S department. Probably every single death was avoidable with less than a day's work to prevent it, starting with the very first scene when they release a raptor into the enclosure. That guy's death could have been avoided by simply

1. Installing some rings into the posts on either side of the gate, and securing the shipping container to them to prevent unplanned movement of the container.
2. Attaching some support posts to the rear of the container that would dig into the ground, rather than letting the container shift backwards.
3. Have a pulley rigged up over the gate that could hook into the top of the door on the container, allowing the crew to lift open the container's door from a safe distance.

And that's literally the first scene. The entire main plot could have been avoided by not permitting a design with so many single points of failure, like only one individual being able to shut down critical safety systems without any additional oversight, and seemingly no fallback systems to account for either incompetent or malicious actors on the island.----