In spite of new wonder drugs and better treatment (indeed, in a certain sense, precisely because of these things), the physical health of the general population will show no improvement, and may even deteriorate. And along with a decline of average healthiness there may well go a decline in average intelligence. Indeed, some competent authorities are convinced that such a decline has already taken place and is continuing. "Under conditions that are both soft and unregulated," writes Dr. W. H. Sheldon, "our best stock tends to be outbred by stock that is inferior to it in every respect. . . . It is the fashion in some academic circles to assure students that the alarm over differential birthrates is unfounded; that these problems are merely economic, or merely educational, or merely religious, or merely cultural or something of the sort. This is Pollyanna optimism. Reproductive delinquency is biological and basic." And he adds that "nobody knows just how far the average IQ in this country [the U.S.A.] has declined since 1916, when Terman attempted to standardize the meaning of IQ 100."
In an underdeveloped and over-populated country, where four-fifths of the people get less than two thousand calories a day and one-fifth enjoys an adequate diet, can democratic institutions arise spontaneously? Or if they should be imposed from outside or from above, can they possibly survive?
And now let us consider the case of the rich, industrialized and democratic society, in which, owing to the random but effective practice of dysgenics, IQ's and physical vigor are on the decline. For how long can such a society maintain its traditions of individual liberty and democratic government? Fifty or a hundred years from now our children will learn the answer to this question.
Meanwhile we find ourselves confronted by a most disturbing moral problem. We know that the pursuit of good ends does not justify the employment of bad means. But what about those situations, now of such frequent occurrence, in which good means have end results which turn out to be bad?