Files and folders on your computer look and feel the same regardless of how much space on your hard drive they take up. Delete a 5-gigabyte file or a 5-kilobyte file with a simple click and drag of the mouse. Sure, one might take a little longer to delete than the other, but there's no change in effort on your part. In the real world, we know that's not true. Otherwise, shipping would probably be free for everything (or at least a flat rate). Jan Barth and Roman Grasy experiment with this idea with DataBot.