As a young child, I used to think that the only way to get back to the start point of your journey was to retrace your steps. So if I went a mile north, a mile east, then a mile south, if I then went a mile west, I would end up in a different place than that whence I started. The only way back would be to go a mile north, then west, then south.
I soon learned this not to be the case. I think it clicked when we went to my auntie's house via the M62 and came back on the A58, surprisingly ending up at home.
