It's not as crazy as it sounds. My left side is stronger and bigger than my right side (left eye, left arm, left leg). I notice when I lean to the right, the weight goes up a pound or two. I think center-of-mass may explain this. If it's not over the center of the scale, the reading will be less. I would think that leaning far left (not politically, mind you!), then far right, and taking the mean (average) of the two readings, you would derive the weight closest to your actual weight. Any mechanical engineers or physicists out there that can confirm or refute this theory?
Whoa. I would have said, "No way"
before posting this article, but having
learned something of the mechanics
of scales since then, I don't know.