This does not matter ALL that much - it is, after all, only a backup. But look what happened in E.M. Forster's "The Machine Stops" when the people didn't care that the Repairing Machine had broken down, because after all THE Machine (the one that ran their lives for them and kept them all happy) was perfect, and would never stop.
In connection with my casebook, I have made an AWESOME discovery about one of the cases. It's real rare-as-rocking-horse-sh*t material. Even the US Armed Forces Institute of Pathology - basically one of the 'ultimate arbiters' of pathology knowledge in the world, quotes the same ten references over and over in their section on "racemose dystrophic pulmonary ossification" (lots of reference recycling, i.e. 'ibid disease'). Basically, bone - complete with blood cell-forming bone marrow, is everywhere in my (dead!) patient's lungs.
When I take a look at the surrounding lung, it's just like the book says it should be (from my brief reading - will have to look deeper into this). Awesome patho-squee.
It almost makes me want to enjoy writing this casebook.