|Here's another rather nice way to mess with your mind - but you'll have to prove it to yourself.
Question: What colour is the tile in the centre of the top of this block?
Now... what colour is the tile in the centre of the front face?
|If the animation at left doesn't convince you (please excuse the limited gif palette, and the blips from the animation), then I suggest you copy the above picture into a graphics program and see for yourself.|
|You may view a more convincing (but big - 145k) version of this animation here.|
of this frame.