"Yeah, I know what you mean," Nida says thoughtfully when Nat puts the idea forward. "I tend to train kids myself. Prefer to start with them at ten, but there's only so much you can do when someone realizes a weapon class doesn't suit them and transfers in."

Younger is better for making warriors. It's not quite the same truth as how you make a good archer, which is to start with their grandfather, but she's not wrong about there only really being some things you can learn young. Some reflexes need time to settle in. And distrust is less damaging when you learn it young, because you don't second guess yourself about it.