Progressivism emphasized action and experimentation. Dismissing the view that humans should leave progress to the dictates of natural selection, a new group of reform Darwinists argued that evolution could be advanced more rapidly if men and women used their intellects to improve society. In their zeal for action, progressives often showed an unchecked admiration for speed and efficiency that promoted scientific management and a new cult to improve productivity. These varied strands of progressive theory found practical application in state and local politics, where reformers challenged traditional laissez-faire government.