In Passing begins with a simple question: what happens in the brief interval between noticing something and deciding what it means? Through photography, the book examines attention, recognition, interpretation, selection, memory, sequence, and time. It considers the photograph not as a complete explanation of an event, but as a registration: the visible result of an encounter whose meaning may still be unfinished. From the first shift of attention to the moment an image is made, numbered, placed in sequence, and seen again years later, In Passing follows the gradual formation of meaning. It asks whether something must already be important in order to deserve attention, how chronology resists retrospective reconstruction, and what remains when the event itself has passed. Neither a theory of photography nor a guide to photographic practice, the book is an essay on seeing - and on the short distance between what appears before us and what we eventually make of it.