曾经有个老师作了这样一个实验。他将一个装满碎石的广口瓶放在讲台上,然后询问学生瓶子是否被装满。学生们均认为瓶子被装满了。可是稍后老师又将细沙填入瓶子,填满了石块的缝隙。最后又倒进去水,使水面与瓶口相平。试想,若先放细沙或者水,就会放不进石块了。通过老师合理安排放入的顺序,瓶子真正被充满,达到了最大的容量。生活中我们随时随地都要面临这样的选择:是先放碎石还是先放砂子,将什么放在第一位。 A teacher once made such an experiment. He placed a rubble-filled jar on the podium and asked students if the bottle was full. Students think that the bottle is full. But later, the teacher filled the bottle with sand and filled it with cracks. Finally, pour it into the water to make the water level with the bottle. Imagine if you put sand or water first, you will not put stones into it. Through the teacher’s rational arrangement of the order of filling, the bottle is truly full and reaches its maximum capacity. In life, we have to face such choices at any time and in any place: whether to put gravel or put sand first, and put what is put first.