Bistromathics are a relatively newly discovered form of technology, science, and transport. As time is relative to factors, memories, ways organisms remember things, and time travel, it is impossible to say whether Bistromathics are newly discovered, appallingly ancient, or non-existant at the time. Bistromathics are the study and technology of restaurants, as numbers in restaurants are unlike those anywhere else in the universe, due to the large amount of non-absolute numbers in the restaurant setting. Quote from the Guide: