28/09/2011 07:08 BST | Updated 28/11/2011 05:12 GMT

Michael Gove: A-level Ranking Plan Insults Any Child Who Wants To Succeed On Merit

Why do some societies succeed while others fail? Why is it that some nations can prosper while others decline? Is it a matter of natural resources, cultural factors or wise public spending? Or some indecipherable ingredient which is a matter of the purest chance?