" The first rule of tinkering is, of course, ‘save all the parts.’ But in dismantling the social fabric, the parts cannot all be saved, for one of them is time. Time, we were told, is a river flowing endlessly through the universe and one cannot step into the same river twice. Not only can we not undo actions taken in haste and in fear (the Japanese Internment), but those taken from the best reasons, but that have proved destructive (affirmative action); the essential mechanism of societal preservation is not inspiration, but restraint. "

― David Mamet , The Secret Knowledge: On the Dismantling of American Culture