You could call it a Cannes festival - of the mind. As 2012's Jaipur Literature Festival (JLF) begins, an old pink city nestled amid rugged hills and golden forts, wearing a history of battles like an antique shawl, is going to face a new invasion. Only, this one involves lying back and loving it. As superstar writers from around the world - including Michael Ondaatje, Ben Okri, Richard Dawkins, Amy Chua and others - reach Jaipur, so will thousands of participants.