一位老人问孙子：“你能看出这马蹄印里写的是什么吗？”孙子什么也看不出。祖父道：“如果你仔细些，就可看出这是那匹灰色母马的蹄印，蹄铁上已经掉了３个钉子，如这样进城会失落蹄铁受伤而归。”面临同样的问题，身处同样的际境，有的人熟视无睹、就事论事、停滞表面，有的 An old man asks his grandson: “Can you see what is written in this hoofprint?” The grandson could not see anything. Grandfather said: “If you look carefully, you can see that it is the hoof print of the gray mare, the shoe has lost three nails, as such into the city will be lost and the shoe is injured.” Facing the same Problems, in the same situation, some people turn a blind eye to things, stop the surface, and some