detective files

Chapter 156 Rabbit bites in a hurry

[This chapter involves some concepts of formal logic. Xiao Mo will post the introduction of the part involved in the work. If you don’t understand it, you can refer to it~]

Starting with Shan Wenxiu is because his first testimony can be proven to be false. In this way, the authenticity of the testimony as a reference item is clarified, and the inferred results will naturally be more accurate and reliable.

"This case is quite special. I contacted Captain Guo Tian yesterday, and he has basically not found any evidence that can directly point out the direction of solving the case, so we cannot handle this case in the way we used to," Cheng Feng wisely said. Said: "Although we usually rely on evidence to solve cases, but this time, we may have to rely on our brains to reason and clear our minds like those detective novels!"

"Alas..." An Changpu sighed exaggeratedly, rubbing his temples: "When I was in the police academy, I was most afraid of the course of formal logic! Those who judge by words and words, think about me All headaches!"

Cheng Feng smiled and patted him on the shoulder: "Don't worry, haven't we summed up the previous transcripts? You have also seen that although these seven people have contradictory information in their words, they are just different. It’s all just sticking to one’s word, there is no mutual bite, you are worried that those complicated situations will not appear, we just need to infer the authenticity of them based on the logical relationship between their testimony!”

"How about you, Jiayi?" An Changpu turned his head and asked Jiayi with a bitter face, "Does your subject involve this?"

Jiayi nodded: "Although I major in criminology, fundamentally speaking, I can't get rid of the foundation of law. Logic is also one of my compulsory courses."

"Great!" An Changpu said to Cheng Feng with a smile: "Boss, no matter what Jiayi says later, I agree with everything!"

Everyone was amused by him and laughed, but they understood him a little bit. After all, these senior brothers were the same as An Changpu back then. They also took a tolerant attitude.

"Well, now we use Shan Wenxiu's initial confession as the standard. He said that because he was not in the venue, he had no chance to attack Peng Lei, so he cannot be regarded as a suspect." Cheng Feng pondered for a moment: "Then it is a It is especially called a negative judgment.”

"Then since his words are false, we can conclude that in other confessions related to what he said..." Tian Yang carefully compared the information at hand, searched carefully, and then his eyes lit up: "Du Yuzhu Du Yuzhu said that everyone has the same chance to attack Peng Lei. Everyone is suspicious. This is equivalent to a full name affirmative judgment? According to Shan Wenxiu’s statement that he was not present is false, then Du Yuzhu’s point of view can be inferred to be true .”

"Even Dong Xue's words have been proved to be false. She and Shan Wenxiu have the same caliber, which is also a special denial!" An Changpu said confidently.

"Go on, go on!" Ma Chunlei jokingly encouraged him to continue.

An Changpu scratched his head: "Then I forgot the logical relationship between those judgments!"

"Lei Zi, don't make things difficult for him," Cheng Feng also laughed. Anyway, everyone is discussing the case, not the teacher's question in class, and it doesn't matter if you can't answer it: "There is a direct logic to Dong Xue or Shan Wenxiu's confession. The relationship is not very conspicuous, it needs to be carefully analyzed.”

Jiayi frowned, and after thinking for a while, he said cautiously: "I don't know if this point of view is correct. Although the saying that Shan Wenxiu left the scene midway and never came back is false, according to the fact that we found him and Dong Xue respectively later, Judging from the results of the conversation, although Shan Wenxiu returned to the arena, he did not re-participate in the game, but only smoked on the sidelines. Although this statement has yet to be proven, I will now treat their later confessions as true. , Zhao Xin said that he saw Zheng Yu, Qi Ge, and Shan Wenxiu fighting at close range. Whether it is from Shan Wenxiu's own description of the game process he experienced, or the fact that he did not re-participate in the game For one thing, Zhao Xin’s argument is equally inexplicable. Besides, Zhao Xin is classmates with Zheng Yu and Peng Lei, but he is not familiar with Qi Ge and Shan Wenxiu. For the people who approached, he said with certainty that he saw them, so one can imagine how true such words are."

"That makes sense. I agree with what Jiayi said." Ma Chunlei nodded frequently.

Jia Yi smiled slightly at him, and continued: "Because Zhao Xin said that he saw those people fighting at close range before leaving the field, and then left the field one after another, so let's put aside other people and temporarily narrow the scope to the one he mentioned. What he implied was that none of these people had a chance to commit the crime, which is a full negative judgment, and since it can be inferred to be false, the specific name associated with it must be true."

"So," Ma Chunlei touched his chin: "Zheng Yu said that not only was he not with Zhao Xin and Zhang Kunlun himself, but he also saw Qi Ge who saw Zhao Xin's close combat with his own eyes, from another A small road came. Can we understand what he meant, Qi Ge is not in the range of people Zhao Xin sees, but is alone, so he still has a chance to commit crimes, and may be the murderer. Isn't that Is a special name definitely judged? Then Zhao Xin lied, and Zheng Yu's words are basically true and credible."

"It's not unreasonable for you to say that." Cheng Feng nodded in agreement: "Next, when Qi Ge was taking notes, he explained that he rushed out at the beginning of the game, which is exactly what Zheng Yu said, Halfway through, I saw him rushing over from the rear of the red team on the small road to conflict. In addition, Shan Wenxiu was confirmed to be the first member to rush out of the red team. Qi Ge's testimony could not be verified, and its credibility was very low. "

"The next thing I know! Zhang Kunlun said that he saw a person who seemed to be Qi Ge, who ran over from the side path and was hit by him. Since Qi Ge lied, what Zhang Kunlun said is correct! And Zheng Didn't Yu also see it?" An Changpu said his inference, and he was very satisfied that he had finally caught up with other people's ideas.

"Okay boy!" Ma Chunlei rubbed An Changpu's head: "There is progress! I haven't returned everything I learned when I was studying to the teacher!"

"Go, go! Don't look down on people!" An Changpu avoided Ma Chunlei's claws unconvinced: "I'm weak in this aspect! Other exhibition skills are excellent!"

"In this way," Tian Yang counted: "Among the seven people, those who can be inferred to be lying are Shan Wenxiu, Dong Xue, Zhao Xin, and Qi Ge."

"We have already visited Shan Wenxiu and Dong Xue for the second time. They both admitted the fact that they lied at the beginning and explained the reason for lying. Although we still need to confirm whether Shan Wenxiu's words are completely true, the next step At least the focus should not be on them." Cheng Feng thought about it for a while: "There is another person who lied in the transcript, we need to go out for a while."

"I see, especially that Zhao Xin!" Tian Yang snapped his fingers: "Think about it, according to Zheng Yu's confession, Zhao Xin is simply a coward and a coward, but Huang Bo from L University said After being robbed by Peng Lei of staying in school, Zhao Xin once made a big fuss with the management of L University. The Zhao Xin that Brother Feng and Jiayi met was also taciturn and passive. I think This shows that, like Du Yuzhu, he has a disguised personality, seemingly cowardly and negative, but in fact he is a grudge-loving and narrow-minded person. Besides, his life is so unstable now that he can't do any work for long. Emotional negative sabotage is not unrelated to the passing of the bright future. If he has always held a grudge against Peng Lei, he has been waiting for opportunities to retaliate in the past few years of contact, and waited until Peng Lei invited him to participate in the paintball game on Liangshan. During the gun game, he realized that the time was ripe, so he prepared the murder weapon in advance, and during the game, he finally waited until Peng Lei was ordered, and then he did it and killed him!"

Ma Chunlei followed suit and nodded: "That's right, rabbits have to bite people when they are in a hurry, not to mention Zhao Xin is such a big man, no matter how cowardly, if he really gets annoyed, the outburst is often worse than those who have a bad temper. horrible!"

"Tian Yang, let me tell you, why don't you just change your career and become a detective novelist! The crime process is told by you, as if you saw it with your own eyes!" An Changpu teased him.

Tian Yang shook his head pretending to be chic: "As an excellent criminal policeman, rich imagination and strong reasoning ability are essential elements!"

His stinky fart made the others burst into laughter.

Enough laughing, Cheng Feng looked at the time, and told Ma Chunlei: "Contact Zhao Xin and Qi Ge, we will split up in the afternoon, a group of people will be in charge of communicating with Zhao Xin, ask him the reason for lying and the real situation at that time, and the other The team members are in charge of Qige."

"I want to be with Zhao Xin!" Tian Yang volunteered.

"No problem, then I, Tian Yang, plus Jia Yi, the three of us will be in charge of Zhao Xin, Lei Zi and Chang Pu, and you will take care of Qi Ge's side!" Cheng Feng agreed to Tian Yang's request.

An Changpu also simply agreed.

After a while, Ma Chunlei came back and told Cheng Feng that he had contacted Zhao Xin and Qi Ge. Zhao Xin agreed to come to the Serious Crime Squad for interrogation. Qi Ge said that the company would still meet and hoped that they could meet with his company. Meet nearby.

"That's how it is!" Cheng Feng glanced at his watch: "I have something to do at noon, you guys take Jiayi to dinner at noon, I will be back as soon as possible!" After saying that, he hurriedly picked up his coat and left.

(End of this chapter)