A man from the State Chu was crossing the river. In the boat, his sword fellinto the water by his carelessness. Imediately he made a mark on the boat.“Thisis where my sword fell off.”He said. When the boat stopped, he jumped into thewater to look for his sword at the place where he marked the boat. The boat hadmoved but the sword had not. Is this not a foolish way to look for a sword?刻舟求劍