 At which two ages does the Bureau of Vital Statistics scan a person’s brain?
New York lay quietly below him. It was the hour of indecision when day has not quite made up its mind to leave and night has not yet attacked in force. Buildings were taller, men were healthier, most of the problems of humanity seemed licked, or nearly so. A month later the meat animals, the birds and the household pets began dropping as rapidly as the flies which had dropped earlier. Congress was called into special session, as were all of the national governments around the world. The panic which had begun with the death of the animals was quieted somewhat by the fact that humans seemed immune to the pandemic. Within six months, half of the world's population was gone. Less than a month ago no more than a few thousand people remained in New York. Before the plague the Bureau of Vital Statistics had been one of man's crowning achievements. Compulsory registration and the classification of each individual by means of the discrete patterns of his brain waves had accomplished for man what no ordinary census could have. Once a year the Bureau issued The Index, an exact accounting of Earth's four billion inhabitants. The average person had little necessity to do so since the Bureau information service would answer questions free of charge at any time. All children had to have a brain-wave recording made by the Bureau during the first month of their life. And again at the age of 10 each child returned to the Bureau for a recheck.
 The first month of life and again at age 10
 The first month of life and again at age 10  At age 10 and again at age 20  At age 10 and again before death  The first month of life and again before death