“that isn’t how the world works. There are no blank slates, no fresh starts, no clean cuts. There is only the messy aftermath of every decision you ever make. Because – and this is one of my greatest frustrations – life moves in only one direction. Every decision that you ever make will be written in stone, permanent, never to be undone. They are all entirely irrevocable. Even if you find a way to unwind a specific decision, to unpick those threads, that decision will always have been made.”