John H. Doe writes "This student was bored one day, so he decided to see what the world looked like from the bottom of his optical mouse. He jury rigged a few wires to his parallel port and wrote a program to take a look. And seeing as how one thing a mouse does is to detect motion, made it into a ghetto b&w handscanner. "
Five is a sufficiently close approximation to infinity.
-- Robert Firth
"One, two, five."
-- Monty Python and the Holy Grail