某教授应邀给某商学院的学生作报告，报告前，教授拿出一个广口瓶放在桌上，随后取出一堆拳头大小的石块把它们一块块放进瓶子里，直到石块高于瓶口再也放不下了，教授才开始问学生：“瓶子装满了吗?”学生们齐声回答：“满了!”“真的满了?”教授反问。说着他从桌下取出一袋砾 A professor was invited to give a report to a business school student. Before the report, the professor pulled out a jug on the table, then took a pile of fist-sized stones and put them into the bottle until the stones were taller The bottle can not let go any longer, and the professor began to ask the students: “Is the bottle full?” The students replied in unison: “Full!” “Really full?” The professor asked. Saying he took a bag of gravel under the table