Guardian: Having been a fan of Franny Armstrong’s previous film, McLibel, I was keen to see her latest documentary, The Age of Stupid. While Al Gore’s An Inconvenient Truth was a rather dry and semi-academic look at climate change, The Age of Stupid is an emotional attempt to rally the troops. The fact that it preaches largely to the converted is not necessarily a bad thing if it encourages those who believe in climate change to become more vocal and more active. But what about those who still …