"I don't actually know your special circumstances story, but it is definitely - as definitely as I can get, as confused as I am - related to your Sherlock being a girl," says Glass, peering at Shell Bell. "I'm not sure - it's different on different layers - but if you'd been impervious to your circumstances, you'd have started out not-straight or she'd have been a boy, or if your Sherlock were a boy the circumstances wouldn't have happened or might have happened differently, or if you were gay - or maybe bi, I'm not sure how strongly your Tony features here, that's indistinct - to start out with then they wouldn't have happened either."