China's famous detective Jiangnan: There are ghosts on campus

Chapter 109 Psychological Portrait (3)

I used to think that it was Uncle He who deliberately lied to me in order to make me lose my mind.However, what he said was indeed true, and a week later I saw the police case closed in the newspaper.

Afterwards, I gradually calmed down, and slowly discovered that the method of criminal psychology portrait seems very useful, but it has great limitations.

This method is extremely dependent on the personal qualities of the analyst, and is greatly affected by the environment. Various minor accidents can make your conclusions very wrong.

At that time, I analyzed that the deceased died in his own home, and his head was injured by a blunt instrument, but there was no trace of any struggle at home, so the murderer should have known the deceased, and the relationship should be OK; The deceased was stunned, and then turned on the gas, trying to fake the illusion of suicide. This shows that the murderer has a certain level of education and experience in committing crimes. Yuan is so desperate.

But this is far from the truth.

The deceased turned on the gas to start cooking, but the phone rang in the living room, so the deceased returned to the living room to answer the phone, but did not turn off the gas in time.When the deceased returned to the living room, he accidentally slipped under his feet and hit the edge of the table directly when he fell, so he passed out and died of gas poisoning.As for the 1 yuan, it was hidden in the sofa after the deceased took it back from the bank that day.

Criminal mind portraits are useless in the face of a series of accidents.

Later, I continued to study and found that this method has another flaw, which is that it is useless to organized crime and high-IQ criminals.In organized crime, a group of people are all criminals, but the specific person who commits the crime is only one of them, and they are often the lowest-level people. Even if you find the suspect by relying on criminal psychology portraits, there is nothing you can do about organized crime.And high-IQ criminals, after committing a crime, know how to clean up and disguise their criminal traces, and often do not leave you with obvious clues.

The method of criminal psychology profiling is only suitable for some low-level ordinary cases, and there is no guarantee of success, because accidents happen all the time in this world.

Therefore, when I learned about it, I realized that if I used this method, I would never be able to find the people behind the death of my parents.

Uncle He has been at the front line of criminal cases all year round. He has rich experience in committing crimes and knows that this method is used by some people, but he disdains it because what he pursues is conclusive evidence, and he does not deliberately detain people. Who meets the criteria for suspects and who doesn't.He also knew that ordinary criminals would have some fixed characteristics, but he only used them for reference and never used them to make decisions.

In fact, Uncle He was not angry because I learned the portrait of criminal minds, but because of my crazy and desperate attitude at that time. He didn't want to see me being blinded in order to find out the truth about the death of my parents. I.

Uncle He did it too.

Since then, I have become more calm, and I am determined to follow my father's last wish to enter the police academy and learn systematic investigation knowledge.

And the portrait of criminal minds was gradually forgotten in a corner of my heart, until today I remembered it again.
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(End of this chapter)