That's by far the most realistic fictional book I have read so far, despite it dealing with extraterrestrials contacting our world. What makes this so realistic is the fleshed-out characters, each with an own mindset and his or her own convictions, and detailing of the impact such a signal would have on our society. Despite this book not being a thrilling roller coaster ride I sympathised greatly with the characters and wanted to see where the story takes them. The only point of critique really would be the ending which feels kinda forced and sudden. Other than that, if you want to know what happens if we discover we're not alone in the universe this is the book for you.