 Why are the children of Ridgeville so smart?
It's a privilege which I'm sure many educators must envy, teaching in Ridgeville, for our new school is a fine one, and our academic standards are high. Some groups have built up tidy little bank accounts which are available for later educational expenses." Back in the old Ridgeville, fifty-odd miles to the south, we had our home almost paid for, when the accident occurred. When Ridgeville moved to its present site, so, of course, did we, which meant starting mortgage payments all over again. "The Miller boy and Mary McCready," he had said, "have exceptionally high IQ's—around one forty or one fifty. Healthy mice of the right strain," I explained to Tommy, "might be sold to laboratories.
 An accident that included chemical fallout occurred, around the time that the children were conceived.
 An accident that included chemical fallout occurred, around the time that the children were conceived.  Tommy and Mary have high IQ's and the other three are androids, built by the Commission.  The children are androids, built by the Commission.  The children of Ridgeville were genetically engineered by the Commission.