If somebody would like to try this .... try generating a blob object made of squares rather than ovals. You'll find it makes for some very interesting effects. Contrary to what you'd expect, it makes curves of many different sizes and shapes and kind of `inverts` the blob field to make it seem like the blobs are actually `outside` the blob areas rather than inside. It looks like the blobs bubble up. Also if you add a `twist` image processing operation to the image it makes the bubbles smaller. :-)