We can no longer deny that males and females are profoundly different. The hallucination is over. Scientists and behaviorists are discovering that men and women differ not just physically, but cognitively and emotionally as well. These differences are not merely the result of gender-specific socialization; they are innate—the result of thousands of years of sexual competition and selection.

Your gender assignment and sense of sexual identity is an imposition. Like many of your other characteristics, you are largely the result of a genetic lottery that happened beyond your control. Consequently, you are in no small way predetermined. Your physical and psychological capabilities are very much constrained and dictated by your genetic constitution.