He knew, the minute he stepped off, that it wasn’t going to end well. He should have realized it two steps earlier, but hindsight was of little use to him now. He knew he had to keep looking up, to focus on the sky. He knew he had to hope it would be like entering a black hole, where the end is certain but time slows and almost seems to stop. And, he remembered, the laws of physics break down inside the event horizon. What he knew he could not do was look down and see the ground rushing up at him. Even when you are 11, walking off the garage roof was not a really bright thing to do, the dare by your friends notwithstanding.