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Over the last decade , the charter movement - which began as a single school with 20 students - has blossomed into more than 2,400 schools and half a million students across the country . The federal government 's proper role in environmental protection is limited to those areas that exceed the jurisdiction of a single state or that cannot be resolved by several states working in concert . " Each of these assumptions is untrue and is a clear violation of the principle of federalism . The Fieldhouse opened in the Shops at Hamilton Mill last spring , giving locals a spot for savory steaks and side dishes as well as a classy venue to watch the big game . The banana pudding fills a goblet and has nice chunks of bananas and whole vanilla wafers . If a single cattle herder conserves some grass for the coming year , the odds are small that he will derive any benefit from that action - since the grass is then available for consumption by the cattle of all other herders . It was served on honey wheat bread , and ended up having to be eaten open-faced because it was a bit too moist to handle . No matter how vital or important the activity , it is improper to impose the costs of providing a public amenity or " service " on a single individual . In a classic article published in 1968 , Garrett Hardin argued that most environmental problems stem from a single cause : the misuse of resources that are owned in common.3 Since the air , the water , most species of mammals and fish and public lands have no private owners , they have no protectors or defenders .