From the bestselling illustrator Peter Frankopan's The Silk Roads, comes a witty, magnificently-produced book, playing with the idea of "sorting". The animal kingdom, modes of transport, musical instruments, art and architectural movements, cloud classification ... anything and everything can be sorted into groups! Framed by a charming narrative about a father and son, this is a book about categories; on a journey into town, a boy called Arvo explores the many ways in which we classify the world around us, to charming - and often amusing - effect.