Ooooh it’s one of my favorite movies I’m surprised I never realized there is a book! Actually I probably knew at some point that there was a book but it didn’t occur to me it would be better than the movie!
but by going alone, it adds that much more tension/suspicion on if it actually happened. it's easier to believe if more people go and have the same experience. unless it's the Sphere where they all just agree on the idea.