You can see in certain places where the wood has actually been recycled and then sort of layed down like a mosaic to accomodate changes to the house. In other spots the floor is uneven because the foundation at one time or another has done some settling. Take a look at this little clip:
I've been reluctant to broach this topic for a couple of reasons. One: Sis is sensitive about highlighting negative aspects of her home, can't blame her for that. Two: The floors look VERY shabby in photographs, I swear, they don't look as bad in person. I'm not suggesting they don't need TLC, obviously they do. All we can do for now is to keep them on the LONG LIST of projects to be completed as we move through the remainder of 2009.