In boxing, they say it's the punch you don't see coming that knocks you out. In the wider world, the reality we ignore or deny is the one that weakens our most impassioned efforts toward improvement.

The more potent, unasked question is how society at large reacts to eager, voluntary violence by females, and to the growing evidence that women can be just as aggressive as men.

And while national military forces have historically resisted the full participation of women soldiers, female talent has found plenty of scope in revolutionary and terrorist groups around the planet.

We live with a distinct double standard about male and female aggression. Women's aggression isn't considered real. It isn't dangerous; it's only cute. Or it's always self-defense or otherwise inspired by a man. In the rare case where a woman is seen as genuinely responsible, she is branded a monster - an 'unnatural' woman.