You're on a journey to the picturesque Truthsville, where all the residents tell the truth all the time, but come to
a fork in the road. One way leads to Liartown; a nasty place where everyone lies all the time, and the other to Truthsville, but the
sign is broken and you don't know which way to go! Help is at hand, there's a resident from each town at the junction. The puzzle is
You may ask one question to either resident (not both), and the answer will tell you which way Truthsville is. What should the question be? Bear in mind that one will always lie, and the other always tell the truth, but you are unaware which is which.