I came across this theory of cat gravity as explained by Robin Wood
who is a fantasy artist. It was probably an interesting night when
she and her friends began discussing this theory but it certainly
explains why things like housekeeping don't get done in my house:

http://www.robinwood.com/Catalog/Pri...ravPoster.html

(note: this site prohibits copying the contents to another location
which is why I've posted this site. I do not have a commercial
interest in her works, although I do like her style).

Julie