One day an expert in time management was speaking to a group of business students and, to drive home a point, used an illustration those students will never forget. As he stood in front of the group of high-powered over-achievers he said, "Okay, time for a quiz.” Then he pulled out a one-gallon, wide-mouthed Mason jar and set it on the table in front of him. He then produced about a dozen fist-sized rocks and carefully placed them, one at a time, into the jar. When the jar was filled to the top and no more rocks would fit inside, he asked, "Is the jar full?" Everyone in the class said, "Yes."
一天，一名时间管理专家在对一群学习商业的学生讲话时，为了论证一个论点，他用了一个令学
