Data Compression: Something for Nothing
—JANE AUSTEN, Emma
We're all familiar with the idea of compressing physical objects: when you try to fit a lot of clothes into a small suitcase, you can squash the clothes so that they are small enough to fit even though they would overflow the suitcase at their normal size. You have compressed the clothes. Later, you can decompress the clothes after they come out of a suitcase and (hopefully) wear them again in their original size ...