Who said the boss won't solve the case

In the police office, Yuan Qiu pulled out all the testimony about Deng Xinran and put them on the table.Wu Yan and Kong Yi, who was in charge of collecting testimonies, stood beside him with serious expressions.

"Captain Yuan, could it be a mistake?" Kong Yi still couldn't believe it: "When I was in the staff dormitory, at least four professors said they met Deng Xinran at around 4 o'clock at night, so it's not like that Everyone is lying, right?"

Wu Yan also frowned: "His alibi is very sufficient, and we can't find any mistakes at all."

Yuan Qiu didn't say a word, Deng Xinran reacted calmly in the classroom, he didn't feel trapped by the police at all, he firmly believed that the police couldn't find any evidence of his crime.

But what is missing?

Yuan Qiu racked his brains and thought hard, sporadic clues flashed in his mind one by one.

"At around 11 o'clock in the evening, Deng Xinran and Professor Tao from the Department of Mathematics, who lived next door, played chess on the table outside the corridor of the dormitory. According to Professor Tao, they stayed until almost 12 midnight, right?"

Kong Yi nodded: "Yes, Professor Tao is a gray-haired old scholar. He said that he always fell asleep around 11 midnight, but he was not very sleepy that day, so he played chess with Deng Xinran. Until around 12 midnight, he gradually fell asleep. When we feel sleepy, we leave separately."

"How many people have seen them during this time?"

"About four or five people. According to their testimonies, they all saw Deng Xinran playing chess with Professor Tao, and a teacher stood beside them and chatted with them for a while. The time was around 11:13."

"According to Professor Tao, there was another teacher who went out at night to take pictures of the electric meter at the door of his room. Because the electric box could not be reached, Deng Xinran helped to take pictures. There were two other people there at the time, and their testimonies were also consistent. "

Yuan Qiu's face was very bad. The testimonies of so many people showed that Deng Xinran had never left the faculty dormitory before midnight. It took at least 12 minutes to travel from the dormitory to the library. Impossible to get to the library before 20 o'clock, let alone commit sex|rasing.

time...time...

袁秋的视线集中在证词上，这些清晰的数字一个个在袁秋脑子里闪过，每一个都无比清晰。从11点、11点13分、11点40分、12点，这些数字无一不在宣示着邓信然的清白。

However, there is always something wrong.

Yuan Qiu frowned, and suddenly asked, "Wu Yan, what time is it?"

Wu Yan, who was suddenly named, was stunned for a moment, then raised his head blankly, and glanced at the clock hanging above Yuan Qiu's office: "It's 4:08 p.m., what's wrong?"

Yuan Qiu didn't answer, his expression suddenly became serious, and he asked Kong Yi directly: "In the faculty dormitory, is there anything similar to a clock or an electronic clock placed in a conspicuous position?"

Kong Yi answered quickly this time: "Yes, there is a large electronic clock in the corridor of each staff dormitory. I heard that the school specially installed it to remind teachers to attend classes on time."

Yuan Qiu and Wu Yan looked at each other, and they both discovered the crux of the problem at the same time.

Time cognitive bias...

The so-called time cognition bias is the phenomenon of illusion of time caused by changes in the external environment or situation.Especially in the staff dormitory, almost all the professors have formed the habit of judging the time according to the electronic clock.If Deng Xinran adjusted the time of the electronic clock, then a perfect alibi could be created.

Kong Yi still didn't understand, Yuan Qiu explained: "Then let me ask you again, what time is it?"

Kong Yi looked at the clock on the wall: "4:12."

Yuan Qiu said "hmm": "But in fact, it is already 4:30, and this watch is nearly 20 minutes behind."

Kong Yi was very surprised. He hurriedly took out his mobile phone from his pocket to confirm that it was exactly 4:30.

"This is time cognition bias." Wu Yan explained: "For us ordinary people, this phenomenon happens from time to time. We often check the time with familiar clocks or mobile phones. Once they fail, we will There is a brief temporal cognitive bias."

"But... Could it be that everyone in the faculty dormitory at that time had such a cognitive error?" Kong Yi couldn't believe it: "This is simply unbelievable."

"Under normal circumstances, it is difficult to cause a group's time cognition deviation, because everyone's habits are different." Yuan Qiu replied: "But Deng Xinran is very smart. He specially chose the staff dormitory. Because teachers are the ones who need to observe time the most. One of the occupations, the teachers who live in the teachers' dormitory have developed the habit of looking at the electronic clock."

"Deng Xinran only needs to adjust the clock back for about an hour, and he can be perfectly cleared of his charges. Moreover, it was midnight when the crime happened, and everyone was resting. He is the least sensitive to time."

Wu Yan picked up the testimony about Professor Tao on the table: "The old professor said that he 'always fell asleep around 11 o'clock in the middle of the night, but he was not very sleepy that day'. During the usual rest time, he didn't start to feel sleepy until 12 midnight, which is the real 11 o'clock."

Now, all the mysteries have been solved, Deng Xinran used the electronic clock in the staff dormitory to create a short time cognition deviation, cleverly cleared his charges, and created an alibi.Now his technique has been deciphered, and he finally revealed his true colors.

"Didn't Deng Xinran help a teacher take a photo of the electricity box at the door on the night of the crime?" Yuan Qiu told Kong Yi: "Go to the school, find out the phone, and ask the computer technology department to extract the time when the photo was taken. "

As long as the time information of the photo is available, Deng Xinran's alibi will be completely deciphered.

Yuan Qiu suddenly felt a lot more relaxed. Although the case has not been completely resolved, the suspect has finally been identified. According to this speed, it is estimated that the case will be closed soon.

Wu Yan called up Deng Xinran's files in the database. A criminal like him who committed rape, rape, organizing a crowd to prosecute, prostitution, indirect intentional murder, etc., must have criminals before that. Prison or detention history.

Wu Yan flipped through Deng Xinran's information page by page, even going back to his elementary school records 30 years ago, but the more he read, the more confused Wu Yan became.

"Captain Yuan, look at Deng Xinran's resume—" Wu Yan clicked the mouse on a spot on the screen and marked it with a red pen:

"When he was in the fifth grade of primary school, he was expelled from school because he peeked at girls in the same class changing clothes many times. After that, he transferred to another primary school in the city. After graduating with excellent grades, he entered a key middle school and skipped twice. After graduation, I went to study abroad.”

Wu Yan turned another page of Deng Xinran's resume, and outlined another page with a red pen: "At Wright Sien University, Deng Xinran was repeatedly warned by the school for stealing women's underwear, and he returned to China after four years of graduation. Teaching, and the subsequent resumes are very clean, without any bad records."

Yuan Qiu also felt a little surprised when he heard this: "That is to say, in Deng Xinran's file records, there are only two bad records of peeping at girls changing clothes and stealing underwear, and there is no record of criminal record or detention?"

"I'm afraid so."

Judging from Deng Xinran's resume, although his hands and feet are not considered clean, he is not likely to commit such serious crimes as rape, organizing a crowd to sell sex, and indirect intentional murder.If his behavior suddenly escalates to the point where he starts to get out of control, something must be triggering him.

"When was the illegal organization of Baichang City Private University established?"

"From the website you checked, it was about a year ago."

"What about Deng Xinran's file records from a year ago?"

Wu Yan checked it again and shook his head: "No, but half a year ago, Deng Xinran divorced his wife and began to live in the faculty dormitory of Baichang Private University."

A person's personality does not change suddenly. Deng Xinran's criminal behavior has escalated seriously. There must be something that caused his personality to change suddenly. Marriage change?Or family misfortune?

Yuan Qiu frowned slightly. With Deng Xinran's character, it was hard to imagine that marriage would distort his character. Deng Xinran admired those charming women who could conquer him, and it was difficult to keep freshness with a fixed opposite sex.