Imagine a rectangle, split into two squares, the left white, the right, black. 
In large black letters on the left (white) side, it says 'AYE', and in big white 
letters on the right (black) side, it says 'NO'. And is *sounds* like. 'I 
KNOW!'. Clever, huh. It resembles a Tai Chi (think: Yin Yang) and is not only a 
meditative tool, but a visual poem and problem-solving aid, and more, in one.
                                                                          -- Cor