There are things on the other side of the door that we miss and we feel we want to have again. We have tried to ease the door open but there is something in the ultimate nature of things that is preventing it from freeing itself. We’ve put our shoulder to the door and it has budged a few inches but the countervailing force has been too strong. We’ve stuck our heads around the door and had a look and we can’t see any obstacle. What on earth is holding it back?