Red, green, blue...
After asking the colors on the question sheet one by one, the pointer on the polygraph did not fluctuate violently until the end.
Even when asked the correct answer, "yellow", the polygraph still showed no change.
Afterwards, the supervisor asked the other party according to the questionnaire whether he knew how Koji Kasuke was killed.
Strangled with bare hands, strangled with a tie, strangled with a towel...
When asked about the correct answer, "the rope", Shirota Uno's answer was still "I don't know", but the polygraph showed no reaction at all, just like the previous answer.
"Okay."
After all the questions were asked, the forensic officer helped the man take off the polygraph: "Thank you for your cooperation."
"It doesn't matter. If this can save me some trouble, I'm still happy to do it."
In the video, Shirota Uno looked up at the camera and smiled, "As expected, machines are reliable. They don't fall into the trap of making unnecessary, irrational, and unfounded assumptions like humans do."
Looking at the other party's sarcastic expression and mocking words in the video, Tang Ze could already imagine what expressions the people watching the surveillance in the observation room at that time had.
But unfortunately, they could only rage helplessly.
As Dai Tianyuno said, their speculation was mainly based on no basis. They simply listed the other party as a suspect because of the "frivolous" behavior he had always shown.
The lie detector machine has no emotions and no bias.
It simply records all data faithfully and objectively, and is actually a more fair existence.
They even suspected that there was something wrong with the instrument, but after Gao Mu sat on it and tried two questions, they found that there was nothing wrong with the polygraph.
This is the fact and cannot be refuted.
Even if they are unwilling, it is so.
The test chart without any changes clearly told everyone a fact.
Shirota Uno is really not the murderer, he does not know any details of the murder.
Of course, generally speaking, the failure of a lie detector is not a big deal. After all, nothing can achieve 100% accuracy.
After all, a lie detector is a device that determines whether the person being tested is lying based on their physiological reactions when they are lying.
Some people may be born with abnormal physical conditions, which may not be a big problem in other aspects, but they can avoid polygraph detection.
So it is understandable if the polygraph makes mistakes.
But this guy is a little unusual, and he is too suspicious.
It's not just the performance, the tie clip dropped at the crime scene is also too suspicious.
Although it was inevitable that his tie clip fell at the crime scene as the other party said, for an investigation, all coincidences are inevitable!
At least they should adopt this attitude to eliminate every suspicious point.
As for the impact, it is also because the identity of the tester this time is somewhat special.
The other party was a physicist, and despite such strong suspicion, he actually passed the lie detector test.
This caused concerns among those above.
It would be fine if the other party is indeed not the murderer, but if he is the murderer, then maybe he has mastered some means that can allow him to avoid the detection of the lie detector.
If there really is a way to block the detection of a lie detector, that would be a big problem.
If this problem is discovered after large-scale use, countless previous cases may be misjudged.
Therefore, this impact is absolutely huge and cannot be ignored.
If there was any possibility, Tang Ze's decision would be ruthlessly cut off.
Even if the convenience is gone, at least there will be no problems with the operation of the Metropolitan Police Department.
Once it is discovered that the other party has indeed found a way to block the polygraph, it proves that the "polygraph" has become a thing of the past.
This is what science is all about. The continuous upgrading of technology will make some existing technologies obsolete.
Checks and balances, the development of science and technology has always been like this.
But Tang Ze felt that even if this situation occurred in the future, it would at least not be the case at hand.
There's definitely something wrong with that guy!
Did he think that just because the instrument was fine, it could prove his innocence?
All we can say is that the professional habits of a scientific researcher make him a little "arrogant".
This may be the case in other professions, but it is definitely not the case in criminal justice.
Their work is full of lies and deception, and the enemies they face are trying every possible way and trick to escape punishment.
It is impossible to dispel their doubts by just testing an instrument.
Even when Tang Ze implemented this policy, he said that the polygraph could only be used as an auxiliary and could not be completely new.
This is to prevent inaccuracies from happening. The top bosses are all aware of this, and their initial positioning was indeed to use it as an auxiliary tool.
The reason for taking it seriously this time is because we are afraid that the other party has mastered the means to evade the lie detector.
If countermeasures have already appeared, there will be no need to use polygraphs on a large scale.
Simply put, the above can tolerate the error rate, which is inevitable, but cannot tolerate the method of cracking the instrument.
This is conceptually different.
When an auxiliary tool may even distort the reference significantly, then there is no need for it to exist.
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