Invalidated by an invalid

Invalid

1: to remove from or classify as not able to perform active service
2: an infirm or sickly person.

Today's layout is quite straightforward. This might reflect the fact that Isaac was suffering from a stinking cold. He built a loop using the viaduct and then put in the points which split off into two branches, one to the engine shed and the other to the repair shed.

After a few minutes later he removed the repair shed and placed a simple siding in the layout instead. The two lines out of the repair shed seem to indicate there might have been an intention to reincorporate it back into the main track, but this never happened.

It reminded me of what happens with real life railways, where a piece of infrastructure no longer serves a purpose and rather than being erased it is just left to slowly decay in sight of the working railway. I often wonder about this when I view it from a train. Was there an intention of returning to it some day, but  no one ever got round to it?