A problem that benefits a lot. One night not long ago, at the dinner table, my three children were 9, 6 and 4 years old. I temporarily stopped fighting for food, and they made time to teach me what exchange is, what is the limitation of thinking, and how to look at various factors of the problem again.

The thing is this: at that time, we were playing Sesame Street, not a kind of game. It turns out that when playing this game, children have to look at three paintings and choose which one does not belong to the same category. I said, look at which of these three paintings is not a category, oranges, tomatoes and strawberries. The boss quickly gave the answer: tomatoes, because the other two are fruits.

I admit that this is the correct answer, although some people think that tomatoes are a kind of fruit. For those of us who have been forced to eat tomatoes and salad since childhood, tomatoes are always vegetables. I was just about to give another topic, three things in a group. My 4-year-old said: The correct answer is strawberry, because the other two are round, and strawberries are not round.

How can I refute this argument? Then, my 6-year-old said, "Oranges are not in the same category, because the other two are red." The 9-year-old child didn't want his sister-in-law to get the upper hand, saying, "Oranges are not the same, because the other two grow on vines." The second child regards this as a challenge to him.

It can be strawberries, because only strawberries will be put on ice cream. There is no doubt that something is happening here. This matter is more chaotic than fighting for food, and it is much more important than whether tomatoes are fruits or vegetables. Copernicus regarded the sun as the center of the universe and readjusted the century-old problem of geocentric theory. My children are doing what Copernicus did.

Rubin Matthews renamed his Bronx ice cream Haagen-Dazs and raised the price without changing the product. My children are doing what Rubin Matthews did. Edward jenner gave up looking for a cure for smallpox and found a vaccine to prevent the disease. My children are doing what edward jenner did.

Instead of studying smallpox patients, he studied people who had been exposed to smallpox but had never been infected. He found that they all suffered from a mild disease similar to smallpox: vaccinia. Vaccinia enables them to prevent deadly smallpox. They are re-examining the relevant factors, and they are re-recognizing their problems.

They are rephrasing their problems. In a word, according to thomas kuhn's book The Structure of Scientific Revolution, they are doing what all scientists who have made great discoveries in history are doing: they are changing the old model. But if our game is an exercise in the school exercise book, then all the children who don't circle the tomatoes will make mistakes.

Anyone who doesn't interpret the problem as a child who is not a fruit is wrong. Perhaps this situation explains why so many of the most ignorant scientists and inventors in the world are failed students in their studies. One of the most striking is Albert Einstein, who may be the most influential model changer in this century.

I'm not going to say anything to the school. God knows, it's so easy. I just want to remind you that the value of information is really limited. I bring this up because our society seems to have developed to such a stage that everyone demands more technology and instant access to more and more information.

Students must be online. Your home must be digitally connected to the World Wide Web. Enterprises must be able to download large amounts of data in real time. However, unless we change the paradigm and re-examine various related factors, information expressway will not bring us any results. No matter now or recently, we are not short of information. Imagine that we have much more information than Copernicus did 400 years ago.

But he did an amazing thing that shocked the earth and completely changed people's view of the universe. He did this not by discovering more information, but by looking at the information that everyone had seen with different eyes. Edward jenner invented preventive drugs not by accumulating information, but by reformulating the problem.

When we begin to drive into information expressway, what we need is not more information, but a new way to look at information. Like my children, we should find more than one correct answer, more than one correct question, and more than one way to read a bunch of information. We should remember that when you only have a hammer, you tend to treat every problem as a nail.