Adam Duritz the singer from Counting Crows said he once wrote a whole EP of music, then he listened to the new album from Gangs of Youth and he threw all the songs he had been writing out, cos the Gangs of Youth album was so incredible. Anyway that's how I feel playing this book, it's so good, it makes all my ideas for puzzle books look silly. I'm gonna make them anyway, but this is the gold standard, Playcebo rocks.