This is a book about a lot of wayward children. The like main characters of the goon squad are on some of the pages in this book, but they are not the focus of this book. So there is the mandala cube, which is where you upload your memories. There is it called brain but with no vowels somehow? Yeah, she doesn't actually do any app stuff like that. She had to come up with new storytelling mechanisms, new protagonists, a completely different thematic conceit. After towing with many different ways in, she landed on the idea of centering Bix and his rapidly changing technological innovations as a way to tackle all three requirements.