| The magician's reveals a stalk of futuristic fungus. The top two flowers are yellow, owing to the strong rays of the sun. The bottom two are red, as they are in the shade continuously. Equal time for sunlight is given by a reciprocal arrangement between the flowers. The artist runs his hand over the stalk to show it, and the flowers unexpectedly change in colour: red , yellow, red , yellow, etc. Awesome visual magic. |