So the end of the story, as overheard by me as a child, is that the police would confiscate any knife or sharp object that was three inches long - the distance necessary to penetrate the heart.

• 故事的结局，这个在我小时候无意中听来的故事，就是警察会没收所有3寸长的刀或尖利的物品--因为这是个可以穿入心脏的距离。