After a nuclear war, civilization was thrown back many centuries. Harsh lands where it is difficult to grow any crops. Severe people who hate everything new and incomprehensible, and worst of all -◦to scientists, carriers of knowledge,◦–◦because it was they, by all accounts, who brought the world to disaster. Inhabitants of an abbey located in the desert in the southwest The United States has been conducting painstaking work for centuries, collecting bits and pieces of all available knowledge - books, records, oral traditions. Someday this titanic work will revive civilization. But is it worth reviving a world that has sunk into oblivion? What if any knowledge is fraught with fatal errors that inevitably lead humanity to destruction?