"It's a lot of homework," mutters Bella. "Also I have to figure out how to go about it. Learning to read my own notebook cipher and counterfactual pastwatching will do reasonably well up to the point where we got the brainphone, but after that for a complete picture I'm going to have to read my counterfactual mind, and I'm - well, for one thing I'm not sure how the fact that these events never happened will interact with the fact that even in the false history I was mentally opaque, and for another I'm not sure how I feel about reading somebell else's mind whether she really existed or not. Like, she didn't walk around doing things, but the things she would have done have had effects on you and Sherlock and Soph and Charlie and Renée and so on."