一位著名的推销大师，他在城中最大的体育馆，做告别职业生涯的演说。 那天，会场座无虚席，人们在急切地等待着这位伟大推销员的精彩演讲。大幕徐徐拉开，舞台的正中央吊着一个巨大的铁球。 主持人对观众说：“请两位身体强壮的人到台上来。”转眼间已有两名动作快的年轻人跑到台上。 推销大师这时开口了：“请你们用这个大铁锤，去敲打那个吊着的铁球，直到把它荡起来。” A famous marketing guru, he made his farewell speech at the largest gymnasium in the city. That day, the venue was packed, people are eagerly waiting for the great salespeople wonderful speech. The curtain slowly opened, the center of the stage hanging a huge iron ball. The host said to the audience, “Please bring two physically strong people to the stage.” Two young people who have been moving fast have been running to the stage. The sales guru then spoke: “Please, use this big hammer to beat the hanging iron ball until it is swung.”