egg that had a 50% chance of being fertilized by different sperm cells and producing a female zygote that would become a female fetus and finally a female baby. That means there was only a 12.5% chance that all three leaders would be born male, and an 87.5% chance that at least one would be born female. The ripple effects of different results are unknowable but potentially enormous. If Anna Hitler had been born on April 20, 1889, in Braunau am Inn, Austria, World War II might never have happened—or a smarter Nazi dictator might have visited even worse horrors upon us by making shrewder
...more
