4/4. We've Always Done It like That. Francis Wheen looks at the folly of conservatism. Down the ages, the Establishment has championed old and false ideas against new and true ones. Galileo got into trouble for sayingthe Earth went round the Sun, military planners have persisted with fatally flawed but venerable tactics, and senior doctors have quashed underlings who tried to stop them killing their patients. Producer Jotyon Jenkins