" And then. . . her knees braced, and she was flying into the air, soaring towards the high ceiling, and her arms were reaching over her head – – and she grabbed hold. Of what, she had no idea, she couldn’t look upwards, but for all she knew her fingernails were digging into solid rock. If she didn’t know what she was doing was impossible, she wouldn’t fall – like Wile E. Coyote happily running across thin air until he thought to look down. "
― Jacqueline Rayner , Doctor Who: Winner Takes All