Edward and Frank nodded attentively.
"I want you to imagine a big book...millions of pages long, sitting on a table. This book represents our world. Each individual page of the book has its own unique content. All pages are part of the same book, so they resemble each other, but no two pages are the same. That’s our universe. Just like the pages of that book, our world, or this planet that we inhabit, sits at a specific point in the universe. But it has many layers.