Night Waves - Nandan Nilekani and William Blake

Philip Dodd talks to Nandan Nilekani, an Indian computer technology guru who has been described as the 'Bill Gates of Bangalore', about his new vision for his nation and how it will shape the global future in the 21st century. He describes how many of the things that were once considered India's burdens - its huge population, its size, its young population - are now its economic advantages. And Philip visits a re-creation at London's Tate Britain of illustrator, poet and thinker William Blake's first and only solo exhibition of 1809.