A farmer is allowed to plough over a Right of Way across a field, but he must reinstate the path within a reasonable time so that people can use it. Sometime he will do this by running a tractor along the line of the path and leaving the passage of walkers to clear it and sometimes he will clear the crop himself. He is not allowed to plough a path round the edge of a field (a headland path).
Westerham Ramblers
There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.
Donald Rumsfeld
