The only thing I can think of, is that this piece of ingenuity would never exist in a post apocalyptic future where humans have evolved into exacting machines.
This software is, in this sense, a win for humanity.
I also didn't realize until now that DVI can only natively encode characters and aligned rectangles in black, and that's why so much TeX work requires PostScript support downstream.
I simply wrote "sorry!" right by the stain, and mailed it off. I've no idea what influence this might've had, but it didn't seem to hurt since I got accepted anyway :)
Some people would like intricate coffee stain patterns, me thinks.
http://indianapublicmedia.org/amomentofscience/ring-around-t... for public article about the research and http://www-personal.umich.edu/~rddeegan/PDF/Coffee_Rings_1_n... for the Nature article about it.
As is, this addition to LaTeX is a bit redundant for me... all papers I have soon enough have this feature anyways.