"Humanity, yeah, they do." Jack shrugged. "I work at Torchwood, and a couple of my good friends are involved with the non-human community. Most of them native to Earth, actually." He'd actually been surprised at the variety of sentience native to Earth when he'd been trapped traveling the slow path. "Some of them used to be human, but..." He chuckled, giving Susan an easy smile. "They're all so amazing."