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  You can take pedagogy as an example. Educators advocate asking parents to take their children to cast a net to find interesting points.

  Some parents take their children to learn various things for this reason, hoping to dig out their children\'s interests. It turned out that even if the child showed a strong interest in the piano, after taking the child to practice the piano, the child suddenly changed from liking it to hating it.

  Does the interest of the brain change?

  From a medical point of view, back to the most basic anatomy, anatomy has long told you that nerves will reshape, but it is difficult for nerve cells to grow after death, so there are many sequelae after brain injury. This statement shows that it is impossible for the brain\'s point of interest to change in a short period of time.

  The only reason that can explain the above phenomenon can only be: this interest is not that interest, you have found the wrong interest.

  Looking at it this way, interest is so hard to find, you think it will run away after you find the result.

  Actually, it is true to cast a wide net in pedagogy, and it is also true to observe the human body’s emotional and other reactions to things to judge whether it is a point of interest. The only thing wrong is this observer\'s level.

   To discover a person\'s interest, the intelligence level of ordinary people is really difficult to do. For reference, what is the purpose of many parents of students to pursue a good teacher?

  Can a good teacher really understand the in-depth principle of discovering students\' interests, that is, the medical principle? Obviously not. This is why it is impossible for a teacher who claims to be very powerful to make 100% of all the students he has taught become masters in all walks of life.

   It can only be said that the good teacher has thoroughly understood some phenomena and hit some luck.

   Don\'t talk about the teacher, the doctor must understand the medical principles in this area, because it is almost difficult to understand the mystery of it.

  The specific analysis is like this. First, clarify the definition of "interest" in medicine. The above experiment said that it must be some kind of external stimulus, which can increase the activity of brain function and then improve brain efficiency.

  This external stimulus, you can roughly think of it as the key to open the door by shouting sesame seeds. With one word and one action, the door to the treasure house of the human brain is opened. In other words, a rare power supply is connected to the brain, so that the brain instantly runs as if it is loaded with rocket power.

   What a successful observer has to do is how to observe the key.

  In medicine, we will first explore the person\'s previous experience, like investigating the "medical history" to find out the past success history of the "patient", and find clues to unlock the key. Finally, do verification again to check whether it is the key.

   Search over and over again, sift over and over again, and finally sift out a more accurate key.

  The above is the process. When it comes to the specific steps, the observer must rely on the observer\'s eyes and brain to observe the reaction of the subject\'s brain to external stimuli in order to observe the key.

  For neurosurgeons, they can observe the coordination of people’s hands and feet, observe people’s emotional reactions to things, and even observe people’s eye movements, etc., and finally make a comprehensive medical judgment based on all reaction symptoms.

  What is the biggest difficulty here lies in the subtleties.

  It is easy for doctors to see patients, because the symptoms shown are different from those of normal people.

   To observe normal subtleties from normal people, what level of naked eyesight is this?

   Can an instrument be used instead of the naked eye? Didn\'t it say that scans can be checked with fMRI?

  (end of this chapter)