Cogs and Monsters. Take it to bits and examine them - the classic way of understanding how the economy works is to treat it like a machine. But what if people behave so differently when brought togetherthatthe oidways no iongerwork? Diane Coyie looks at challenging ideas about complexity and asks if the economy is more like an animal than a machine. Producer M!chae! Blastland. Repeated Sunday 9.30pm