This subject of biodeterminism has a long, complex, and contentious history. We can easily get lost in the minutiae of abstract academic arguments. But we must never forget the human meaning of lives diminished by these false arguments—and we must, primarily for this reason, never flag in our resolve to expose the fallacies of science misused for alien social purposes. So let me close with the operative paragraph of  The Mismeasure of Man: "We pass through this world but once. Few tragedies can be more extensive than the stunting of life, few injustices deeper than the denial of an opportunity to strive or even to hope, by a limit imposed from without, but falsely identified as lying within."