Detective Training Manual

"What?" Zheng Gangtie questioned again in the tone full of question marks: "The sound of knocking on the head? You wouldn't mean it, what strength, speed, and even the material of the knocking can be distinguished from the sound. Please, you are not a computer, do you have sonar in your ears?"

"Of course not." Zhou Yan said: "It's just that I feel that there are some contradictions in the gap between the various voices."

"Huh?" Xiaogang obviously didn't understand ~www.wuxiaspot.com~Get red envelopes] Follow the public.. Public number [Book Friends Base Camp~www.wuxiaspot.com~ draw up to 888 cash red envelopes!

"For example, when a person is knocked out, there are generally two situations.

The first type: After a violent impact on the brain, he faints quickly, and there is no reaction time at all. This situation requires a lot of strength, very rare,

The second type: After the head is smashed, it takes about half a second to one second. The protective mechanism of the brain operates, and the person will faint.

To make it clearer, it is...

The first is to pass out on the spot.

The second is to pass out after a second. "

"Stop!" Zhou Zhenggang really didn't want to interrupt Zhou Yan, but he couldn't help it anymore: "Are you really mentally ill? There is only one second between these two situations. Do you still want to use this as an argument for the gap?"

"Yes!" Zhou Yan said with certainty: "Because at that time... I didn't hear the sound of the electric drill at the moment this person was'stunned'."

"Huh?" Zheng Gangtie frowned, he didn't follow Zhou Yan's thoughts.

Zhou Yan continued: "Imagine that at the time, the criminal was holding an electric drill and threatening me in front of me. At this moment...a wrench hits him directly from behind his head, what will happen to him? "

"He will..." Liu Zhiyuan stretched out his hand, made a gesture of holding an electric drill, and then suddenly realized: "He will subconsciously pull the switch!"

"Yes!" Zhou Yan added, and then pointed to the electric drill on the ground: "The model of this electric drill is the most common type on the market. It looks like a pistol as a whole, except that the front end is a spiral iron pillar. Designed to be close to the [trigger] style.

For safety, there is a small guardrail outside the trigger. This leads to the fact that if you want to pull the trigger, you have to put your fingers into the guardrail.

At that time, the criminal threatened to get my tongue out, and his fingers were pulling the trigger from time to time to make me nervous. Therefore, his fingers are stuck in the guardrail all the time.

And a person, at the moment his head is severely injured, he will definitely feel pain, the muscles of the whole body will definitely be tense, his fingers, so close to the switch of the electric drill, he will definitely touch the switch uncontrollably.

But... I didn't hear any sound from the electric drill at that time! "

"This..." Zheng Gangtie was stunned, but he still doubted again: "Well, although it's a bit wrong, but so what? You don't mean that when people are hit with their heads, there are also There is no immediate reaction, is it a direct fainting situation?! So, this can't be regarded as a suspicious point!"

"Okay~" Zhou Yan smiled: "Of course this is not the only doubt I suspect that Li Lei is the real murderer, but let's finish this doubt first.

I think the reason why there was no sound of the electric drill... was because Li Lei really broke his finger.

In order to pursue the authenticity of the whole scene, he worked hard and really broke his knuckles. This also made him unable to make the sound of a'wrench hitting his head' while holding the electric drill.

And when it comes to smashing the head...

This is another doubtful point.

At that time, the ‘criminal’ was standing in front of me, judging from the sound, his head was probably in this position. "

Zhou Yan stretched out his hand and compared the shape of a head in front of him.

"Li Lei's left hand was broken. He definitely couldn't hold the wrench with his left hand. Therefore, at that time, he held the wrench with his right hand. The biggest point of force should be on the right side of the'murderer' head. , This way...should the wrench pass."

With a wrench in his hand, Zhou Yan learned a bit decently.

"But... the big bag of the murderer's head is in the back of his head... This is very strange."

"Why are you always deducting these details!" Zheng Gangtie exclaimed dissatisfiedly: "Even if it is easy to pull the wrench from the side, how could Li Lei care so much about the situation at the time? Maybe he just thought, The back of a person’s head is relatively fragile, so I smashed the back of the head. Isn’t it easy to explain things... Brother Li Lei, don’t give this guy face, you can say a few words yourself!"

When Li Lei heard it, it seemed that this had eased his mind. He looked at Zhou Yan very anxiously and said, "Yes, I was very scared at the time, so I hit the back of my head. At that time, the murderer was holding an electric drill close to you. Worry!"

But before he finished speaking, Zhou Yan immediately waved his hand: "No, no, you understand it wrong, I am not saying that the head is wrong, but that...the direction of the corpse is wrong."

"Wh...what...?" Zheng Gang said disdainfully: "Direction?"

"Yeah, isn't it obvious?" Zhou Yan said, pointing to the so-called murderer lying on the ground: "Think about it. At that time, this man was holding an electric drill and came towards my mouth. Near my face!

If you stand behind the criminal, would you dare to pat him on the back of the head?

You are crazy!

The intensity of your shooting of the criminal must be the force of milking, and the bag behind the criminal's head also confirms this, but if that is the case, the criminal's body will directly fall forward because of the force!

what about me?

Think about that posture...90% of my head will be pierced by an electric drill!

If it was you~www.wuxiaspot.com~ in that situation, would you dare to shoot? "

"This..." Zheng Gangtie questioned Zhou Yan from beginning to end, but he didn't refute this, because he put himself in the position and thought about it. If he were Li Lei, the situation was true. Don't dare to start.

Zhou Yan's words continued: "Moreover, look at the location where his head was smashed, it is obvious that Li Lei raised the wrench high above his head and then slammed it down... this way of exerting force. , The body of the criminal actually fell to the side, which is simply impossible."

"But... but I don't know why this happens. I'm really just a victim!" Li Lei's expression became more and more nervous.

"Yes, Brother Zhou Yan, Li Lei is also a victim." Liu Zhiyuan seems to want to mention Li Lei's defense: "And, if he is really like what you said, he is behind the scenes, then he must be very smart. Ah, I can definitely think of the direction to smash my head!"

"Of course he can think of it." Zhou Yan said: "But... he couldn't do it at the time..."