You're correct in that the dollars are out of place while the soda cans are not. A better experiment might be this: Leave the door to a locker open, with a fe

You're correct in that the dollars are out of place while the soda cans are not. A better experiment might be this: Leave the door to a locker open, with a few items of clothing to show that it belongs to someone. In one version leave an open jar of candy. In the other, an open jar of quarters. I suspect that some of the candy would disappear while far fewer of the quarters would go. Of course, the reason for that is that the candy is much more tempting than the quarters, though less that 25 cents per piece.