Only One Path At A Time

So I was out walking this morning and at one point started thinking about the route I was going to take biking this Sunday. When I snapped back to the here-and-now, I was disoriented and didn't know where I was. So this somewhat refines an earlier conclusion of mine: that our minds have only one set of circuits for following paths. Hence the confusion when you think about following a path while actually following a path. I think I blogged this before with regard to becoming disoriented while driving if you think about how to drive somewhere else (but I couldn't find it). This generalizes the conclusion to be independent of mode of travel, be it on foot, by bike, or by car.

Of course it could mean that I have only one set of path-following circuits. Maybe other people have more than one?