Huh? I've never really understood this metaphor. Take any photograph in Photoshop. First, save one copy of it as a compressed JPG. Now, on the original, add a

Huh? I've never really understood this metaphor. Take any photograph in Photoshop. First, save one copy of it as a compressed JPG. Now, on the original, add a small densely repeating tiled pattern multiplied on top as a layer. Like a halftone effect, dot texture, whatever. Technically you're adding more order and less chaos. The resulting image won't compress as efficiently.