The most concerning thing to know about here are a couple of types of items that appear in what is presented as a list of ‘facts’. — There are a few surprising references to darker elements. It mentions Phasmophobia as the fear of ghosts. It tells readers that Abracadabra used to be written in a triangle shape to keep away evil spirits (not that it does NOT say that “people believed” that this is was used for, it says that this “is” what it was used for). In a similar way it tells children that it is illegal to sell a haunted house in New York without telling the buyer (again, a strange message that makes it sound like houses are in fact haunted). There is another item that mentions halloween and gives a year when it occurred on a full-moon. — The next set of “facts” to know revolves around the modern-day teaching about evolution and the age of the earth. We are told that “most experts” believe birds are descended from dinosaurs. A date of 55 million years ago is referenced. We are told matter-of-factly that the human ear evolved from ancient fish gills, that the oldest human footprints ever found was 350,000 years old and that Crocodiles have been around for about 200 million years. — The only other items to know about are a reference to Harry Potter and another where we are told that some fish change from female to male (something that in today’s culture may bring more unintended implications with it than is intended).