Most parents who are neglecting their children to be on social media are doing so at home, not in a busy crowded public place. And if I was to believe the testimony from the parent of this child, just a few moments prior to the kid falling in the kid asked if he could swim with the gorillas. If the kid was really wanting to swim with the gorillas and had that idea in their mind, don't you think you would want to watch and make sure the kid doesn't try to do anything? And when you say "shit like this happens" how often does a kid fall into an exhibit at a zoo? If this really is a common place occurrence, then really the majority of the blame should be on the zoo for making it so easy to fall into an exhibit.