"Excuse me, did you steal the snacks from Sihuayuan?"

"May I ask if you have any dissatisfaction with your boss?"

"May I ask if you want to usurp the throne?"

"May I ask if you want to surpass your boss in reasoning?"

"May I ask if your boss is not here, are you doing a good job?"

Except for the first and third of the five questions, there were no waves, and the electronic screen in front of Tang Ze responded to the other three questions.

Seeing that Tang Ze was still going to continue asking, Koshimizu Nanatsuki, who was sitting on the chair, already took off the finger clips on his body and the sensor attached to his head with a dark face.

"I think you're trying to trick me on purpose!" Koshimizu Nanatsuki said frantically.

"I know what I'm asking you."

Tang Ze smiled and said: "Sometimes I disappear for several days, there will be any dissatisfaction and fishing, there is no need to be embarrassed.

As for reasoning better than me, that's a good goal and I hope you keep it up. "

"I shouldn't have been fooled by you!"

Even after hearing Tang Ze's words of relief, Yue Shui Nanatsuki still rolled his eyes and said angrily.

Although the words are so reasonable, these emotions are well known by the two of them, and even Koshimizu Nanatsuki expresses it unabashedly every time he comes back.

But it's still embarrassing to be punctured by a polygraph test like this.

"Now you have realized the power of science." Tang Ze smiled and said, "Okay, let's see if our four suspects can give us some clues to solve the case."

Because there are four testers in total, they didn't wait to test together, but whoever comes first will test first.

After contacting four people, the first person who came to the case was Eiko Mihara, the first discoverer of the case.

"This investigation is a test to find the murderer of the Shanshui Mingqiu case as soon as possible."

Looking at Keiko Mihara in front of him, Tang Ze explained: "We will ask you 15 questions, some of which are related to the case, and some are not.

You just need to answer "No" to all of them. "

"Understood." Mihara Keiko nodded lightly in a blue dress, expressing her understanding.

"Then is there anything else you don't understand?" Tang Ze asked.

"If the results of the polygraph test show that I'm lying, will you arrest me directly?" Mihara Keiko looked at Tang Ze and asked.

"We only use machines to assist in the investigation, not to use machines to decide the case." Tang Ze smiled and said: "These investigations are only for reference."

"Understood, that's fine." Mihara Keiko smiled and said, "Come on."

"Then let's start." Tang Ze smiled, and immediately asked the first question: "Is it raining in Tokyo today?"

"No."

"When Shanshui Mingqiu was killed, was the murder weapon a knife?"

On the polygraph screen, the lines were still smooth.

"no."

"Do you know the person who killed Shanshui Mingqiu?"

When this question was asked, although Mihara Keiko's face was still calm, Tang Ze could see a little unnaturalness, and there were some waves in his pupils.

Tang Ze looked at the lines on the screen, and as expected, he began to climb higher, which was greatly different from the previous smoothness.

But Tang Ze didn't ask the other party this question, but continued to ask follow-up questions.

After the polygraph test, Tang Ze didn't force the other party to speak, but watched the other party leave.

"Senior..." Koshimizu Nanatsuki looked at Mihara Keiko who was leaving, but he hesitated to speak.

"It was you who wanted to ask me, why didn't you continue to ask her?" Tang Ze said with a smile.

"That's obviously a problem." Koshimizu Nanatsuki said, "She's protecting someone."

"Sometimes the machine is not necessarily right, so I tell you to control the tools." Tang Ze smiled.

As he said before, they only use machines to assist in the investigation, not to use machines to decide cases.

Therefore, they will not use the results obtained by the lie detector for further interrogation.

If you rely on machines from the very beginning, then your judgment is no longer objective, and you are likely to get a wrong answer.

When the subject starts to rely on the machine, you will be manipulated by the machine without knowing it.

He realized this when he performed the brain fingerprint test on the "Lashishan Man" who lost his memory in Kyoto.

Because people are complex individuals, people make mistakes because of cognition constantly throughout their lives.

Therefore, the machine can only feed back the concept that the individual's subjective consciousness thinks, and cannot judge whether the concept is right or wrong.

Even if Mihara Keiko showed a reaction that she might know the prisoner when answering the question, it might just be the prisoner she thought.

Therefore, it cannot be judged that Eiko Mihara saw the murderer. What they have to do is to use this information to restore the truth of the case.

When the truth is confirmed about what you have done, Tang Ze and others will ask again, and the other party will naturally tell everything they know honestly.

What Tang Ze and others have to do is to identify the authenticity of the information and finally arrest the criminal.

Tang Ze told Koshimizu Nanatsuki what happened in Kyoto, and the other party finally understood Tang Ze's thoughts.

Not long after Mihara Keiko left, Koga Kenji was the second to arrive at the Metropolitan Police Department.

After installing the lie detector, Koga Kenji also responded to the question of "do you know the murderer?"

Facing this result, Tang Ze continued to ask with a calm face, "Did you steal anything from Shanshui Mingqiu's store?"

Hearing this question, Koga Kenji blinked his eyes again and again, and his breathing began to become a little short.

And with his answer, the lines on the polygraph screen climbed higher again.

In this regard, Tang Ze just recorded the facts and continued to ask, and the test soon changed to the third place, the wife of the deceased, Eri Shanshui.

"Is the tie the weapon that killed Shanshui Mingqiu?"

"no."

"Is the murder weapon that killed Shanshui Mingqiu a vase?"

At this moment, Shanshui Eri's lips twitched slightly when she heard the question. Although she denied it, the instrument faithfully recorded all the indicators of her ascent.

After seeing this result, Koshimizu Nanatsuki changed from understanding to experience.

Because they dissected the corpse and confirmed that the corpse was strangled to death by a tie, but Sanshui Eri reacted to the vase in his cognition, thinking that the vase was the murder weapon.

But both were "correct answers" on the polygraph, and it did test that the other person was lying.

This is a mistake in cognition, which leads to errors in results. If you are completely new to the machine, you will only get wrong answers in the end.

Fortunately, during the last exchange meeting, he gave an example through "Arashiyama Amnesia Man", asking criminals from all over the world to use the machine objectively.

Otherwise, this new type of polygraph may bring a lot of troubles to criminal cases in various places because of its precise and powerful functions.

But in Yueshui Nanatsuki, I realized that I had gained a confidant, and soon it was the last Mr. Takase Hiroki.

Faced with the question "Is the murder weapon that killed Shanshui Mingqiu a vase?", the other party seemed calm.

"Is the weapon that killed Shanshui Mingqiu a belt or something?"

Although the answer was still negative, the instrument fluctuated.

Tang Ze glanced at Takase Hiroki, and continued to ask: "In the past, besides Shanshui Mingqiu, have you killed anyone else?"

This was originally a question that had nothing to do with the case, and the other three people also got through it smoothly.

But for Takase Hiroki, his reaction was a bit violent.

The trembling eyes and fingers, the ever-climbing heartbeat line, everything indicates that the other party seems to have had an unusual experience.

And they didn't expect that this fixed question mixed in the lie detector actually screened out a suspect who might have killed someone.

When I chose this question, I just thought it would be possible to check whether the suspects had ever killed someone, and they were potential murderers who hadn't been exposed.

It is a fixed and rough investigation process.

But even Tang Ze didn't expect that not long after this issue was finalized, they actually found a person who might have a problem among the suspects in a case.

However, Tang Ze still did not detain the other party, but watched the other party leave after completing the polygraph test.

"Isn't this going to stay?"

Koshimizu Nanatsuki looked at Takase Hiroki's back and said, "The question just now must have alarmed the snake, what if he runs away?"

"If it proves that he is the murderer if he runs away, it will save trouble."

Tang Ze smiled and said, "Also, just because I let him leave doesn't mean we can't go there.

Don't forget that he is still one of the suspects in the case. It is not illegal to send someone to watch him, right? "

"I'll just say it." Koshimizu Nanatsuki said with a smile when he heard the words: "This kind of situation has happened, and you still abide by the regulations, that's too rigid."

"The question was added to screen for murderers who lurk in society and evade justice."

Tang Ze heard this and said: "Now that we have discovered a case, naturally we cannot let it go.

Of course, other circumstances are not ruled out, so the investigation of his possible murder is left to you, no problem, right? "

"Leave it on me." Koshimizu Nanatsuki patted and assured with a smile.

Seeing her eagerness to try, it was obvious that she was interested in this "murderer" who was detected by the lie detector.

And after Yue Shui Qigui left, Tang Ze also looked at the few questions that the four people responded to under the polygraph test, and began to sort them out gradually.

After all, the problem is the same, but the responses of several people are different, which means that their cognition is different from each other.

And he also needs to eliminate some wrong options based on the current intelligence, and further narrow the scope.

First of all, Takase Hiroki and Mihara Keiko reacted to the tape, and this alone raised the suspicion of the two.

Because after an autopsy, it was confirmed that the deceased was indeed strangled to death.

But what the specific murder weapon was, they haven't found it yet, and that's another question.

Under normal circumstances, only the murderer knew what he was using to kill someone, but now two of them responded to the "belt" weapon.

This can be divided into many situations. One is that the two committed the crime together, so naturally they both know the murder weapon and the method of killing Shanshui Mingqiu.

The other is that two people commit crimes successively. The first person thinks he killed Shanshui Mingqiu, but in fact he didn't.

And Shanshui Mingqiu happened to meet the second prisoner after waking up. The other party learned that Shanshui Mingqiu was almost strangled to death, so he continued to kill the other prisoner, wanting to "ride the wind" to inflict the crime on the second prisoner. on a prisoner.

Therefore, while the suspicion of the two is further raised, further investigation is needed to know who is the real culprit.

Of course, those who are suspected of rising will have their suspicions cleared.

The deceased's wife, Sansui Eri, responded to the question "Is the murder weapon a vase?"

If the murderer was crushed to death by a vase, he would be the criminal, but unfortunately he is not, so the most common crime in landscape painting is intentional injury.

Finally there is Kenji Koga, who responds to the question of theft, and considering the envelope Koshimizu Nanatsuki found, perhaps he stole that envelope.

In the polygraph test, they may each be suspected of a crime. On the night of the incident, they did something to the deceased in the bar.

However, their suspicion of murder has decreased, and Tang Ze even realized that the real culprit may be someone else.

None of the four responded to one of the 15 questions.

Whether it's breathing, skin charge, blood pulse, brain waves, or pupils, there is no obvious response to any of them.

And that question asked, "Did you strangle Shanshui Mingqiu to death?"

That is to say, the four people may have done something~lightnovelpub.net~ but none of them strangled the lion's neck, from this point of view, the four people may not be criminals.

Of course, there is also the problem of all four responding.

And this question is "Do you know the person who killed Shanshui Mingqiu?"

In answering this question, all four responded.

In other words, all four of them probably knew the murderer who killed Shanshui Mingqiu.

However, there were no criminals among the four.

Obviously, this situation is caused by the cognitive problems of the four people.

It's like "Lashishan Man" has an impression of an unknown female reporter, but it's not because of her, but because the work card sling around his neck is the murder weapon, so he reacted.

But before they realized it, they even thought the instrument was broken.

And the situation that will cause this paradox this time must be due to similar reasons.

Because everyone's cognition is different, all the answers are brought together, but conflicts occur.

Of course, in addition to these gains, Takase Hiroki may have killed other people, and the other party's reaction was as if he had really killed someone else.

As for whether it was an accident or a hidden murderer, it depends on the follow-up investigation by Koshimizu Nanatsuki.

At this point in the investigation, the progress of the case has temporarily stalled.

After all, they have too many things to investigate, and these will take time.

Although the case was important, it was only part of the job, and he had to go home after get off work to eat when it was dark.

And early the next morning, all the things that he had worked hard to investigate the day before had results.

And Tang Ze and Takagi also took this investigation evidence, brought Koga Kenji back to the interrogation room, and began to interrogate him.