 At which two ages does the Bureau of Vital Statistics scan a person’s brain?
A month later the meat animals, the birds and the household pets began dropping as rapidly as the flies which had dropped earlier. Once a year the Bureau issued The Index, an exact accounting of Earth's four billion inhabitants. 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. On these screens could be graphed the population of any and every part of the globe. An illuminated counter immediately above it would give the numerical strength of the area being sampled while the screen would show population density by individual pinpoints of light that merged to form brightness patterns.
 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