Hinta: 100 e
Over the sharp thorns of a cactus hangs a plastic bag filled with water.
The distance between the cactus and the bag is important, the thorns
are on the border of puncturing the plastic.
The bag is transparent so you can see the water, and the cactus
through the water. The string that the bag is hanging in forms a
thin line that points down towards the cactus. Inside the head
of the spectator an image is formed over what can happen, or will
happen when the cactus reaches the bag.