The fly climbs along the ladder to the left. He walks along the plank. He stops. He sniffs. He smells something good. He peers over the edge and sees the sugar lump. ‘Ah-ha!’ he cries. ‘Sugar!’ He is just about to climb down the string to reach it when he sees the basin of water below. ‘Ho-ho!’ he says. ‘It’s a trap!’ They want me to fall in!’ So he walks on, thinking what a clever fly he is. But as you see, I have left out one of the rungs in the ladder he goes down by, so he falls and breaks his neck.