‘As far as I can see from this,’ interrupted the Senior Wrangler, who’d been reading HEX’S write-out on the more complex physics of the Project, ‘if you were travelling in a cart at the speed of light, and threw a ball ahead of you …’ he turned over the page, read on silently for a moment, creased his brows, turned the page over to see if any enlightenment was to be found on the other side, and went on ‘… your twin brother would … be fifty years older than you when you got home … I think.’
