The reason why people are not in such a hurry?

Mike Hulme: The Science and Politics of Climate Change - WSJ.com: "The citizens they rule over have minds of their own. In the U.K., a recent survey suggested that only 41% believed humans are causing climate change, 32% remained unsure and 15% were convinced we aren't. Similar surveys in the U.S. have shown a recent reduction in the number of people believing in man-made climate change."

I guess this is the reason we don't think the philosophers should rule the world like Plato said.