Fortescue considers. For her, it's information she learned in her history classes. When she was still in school, anyway. Back before... well, everything.

"Scientific progress, mostly. Technology from other worlds. Once we cracked genes and x-rays, things just went from there." She shrugs. "I'm sure they can do more invasive things than just change hair color. They'd never tell us. But they'll never be able to create magic users themselves."