“Let’s switch it up a little, then,” I said. “And swap out the white lab coat and the clipboard for, I don’t know, a pointy black hat and a broom. And lose a pronoun. If she did somehow have the ability to choose which world she was going to be shunted to when she opened the lid—if she could control the outcome—” “It would look like magic.” “What do you mean ‘look like’? It would be magic.” “Just saying,” Tristan said, “that it’s about choosing possible outcomes that already exist—slipstreaming between closely related alternate realities—as opposed to bringing those realities into existence.”