A fighter, muses Rachel, is a fighter through and through, consistently irregular, a fighting man on every scale. Fractal, fractious, with a rough complexity! Nothing she can do. A fractal, Papa once told her, is a way of seeing infinity.

In Zachariah, she sees infinity.

Mandelbrot famously wrote a paper called 'How Long Is the Coast of Britain?,' the answer to which, of course, is that it depends how you look at it. The closer one looks, the larger it is. And more and more intricate, on an infinite scale.

There is a template for all things.