The Icknield Way my be the oldest road (or footpath) in England. It was there before the concept of opening land, and people have been traveling on it for thousands of years. So it should be worth saving, right? But what if it cut through your land? Surely you want to have some control over who walked through your property. And that's the conundrum Tom Scott explains here- the tension between the rights of people to travel the same paths they always have and the people who bought up that land and would just as soon have those historic walkways erased from maps.