You have with you the book you were reading in the cafe, which you are eager to continue, so that you can then hand it on to her, to communicate again with her through the channel dug by others' words, which, as they are uttered by an alien voice, by the voice of that silent nobody made of ink and typographical spacing, can become yours and hers, a language, a code between the two of you, a means to exchange signals and recognize each other.