Imagine that you are about to take a trip somewhere new. It will involve a car journey of some hours across areas that are unknown to you. You have no idea what to expect or whether you will encounter any problems on the way. What would you need to give you more comfort in advance of the journey?
Few of us would set off without some kind of map or SatNav device. The map would show our destination and give us key points on the way that would help us know we were on the right track. With a clear view of the route we are to take, the main towns we are to pass through and having checked that this is all realistically possible in the time we have allowed, we can look forward to and enjoy the journey itself.