Send us Fan Mail You’ve probably used a map app like Google Maps, Apple Maps or Waze to help you get from Point A to Point B as quickly as possible. But did you ever wonder how they work? Did you ever wonder whether we should slavishly follow their directions or be skeptical and consider external factors like our own prior driving experience? Well, wonder no more. Mark and Joe take the fastest route that starts with paper maps, brings them past an obscure mathema...