Propaganda. Manipulation. Spin. Control. It has ever been thus -- or has it? On the eve of the 60th anniversary of George Orwell's classic essay on propaganda ( Politics and the English Language ), writers have been invited to explore what Orwell didn't -- or couldn't -- know. Their responses, framed in pithy, focused essays, range far and wide: from the effect of television and computing, to the vast expansion of knowledge about how our brains respond...