A love letter to Paris and a meditation on how it has changed in two decades, evolving from the twentieth century into the twenty-first, from analog to digital.Your telephone is precious. It may be envied. We recommend vigilance when using it in public. --Paris bus public noticeIn fall 2014 Lauren Elkin began keeping a diary of her bus commutes in the Notes app on her iPhone 5c, writing down the interesting things and people she saw in a Perecquian homage to Bus Lines 91 and