Melvyn Bragg and guests discuss Africa. It could be seen as the great test of the West; economically, intellectually, spiritually. The "dark continent" was seen as a source of power for the West through its natural resources, a place of harvest for western religious missionaries, a prize area for anthropologists - a dark continent to be illuminated by our western lights. Now, darker, all but extinguished some think, by the attentions of its invaders, Africa is outside the take-up of the twentieth century it seems. But is this received view is merely clichéd and too easily pessimistic. With Professor Henry Louis Gates Jr, Chair of the Afro-American Studies Department, Harvard University and presenter of the BBC 2 series Into Africa; Anthony Sampson, writer, journalist and author of Mandela: The Authorised Biography.