3. Can walnuts be squeezed by the door to nourish the brain?
There was a burst of laughter in the conference hall, causing many police officers passing by to take a curious look before leaving.
In fact, reasoning operations require the most skill, and the knowledge that needs to be used is all-encompassing. Even criminal police officers who have worked for many years need to continue to follow up and learn.
Xiao Yang glanced at Gu Chen and returned to the reasoning on the question board.
It is said that a layman can see the excitement and an expert can tell the truth. Generally, people who are good at solving crimes can tell the true level of a reasoner at a glance.
But from the perspective of solving crimes, the time of committing the crime is usually placed first, but the motive for murder is also an indispensable option.
In the reasoning given by Gu Chen, both suspects may have committed the crime, so only by finding the specific time of death of the deceased can the murderer be found based on the time when the two were not present.
But Gu Chen's entry point is obviously very good.
What amazed Xiao Yang the most was that Gu Chen's analysis of the time of the crime was also accurate.
"Gu Chen, tell me, why did you decide that the time of death was at night?" Xiao Yang asked coldly.
"Because of this photo." Gu Chen took the photo under the colorful magnet back into his hand, and then held it in front of everyone to check it out.
Everyone knows that the murderer put the body in hot water to cover up the real time of death, but Gu Chen used the photo to talk about it, which is very confusing.
"Gu Chen, is there anything different about this photo?" A trainee police officer in the queue asked him curiously: "Isn't it just a spider web outside the window on the second floor with a few feathers stuck on it?"
"Yes, didn't I say that the investigation result of this question was that the crime scene was found in the bedroom on the second floor. There were signs of a fierce fight, and the feather pillow was torn. There were white feathers everywhere on the floor of the room, and occasionally a few pieces.
Floating outside the window, what's so strange about this?"
Another trainee police officer asked.
Everyone began to look at each other and discuss quietly, but in the end no one said anything.
Xiao Yang smiled. He knew that this photo was the key to solving the problem, but Gu Chen did a good job.
Others have never thought about why.
However, Xiao Yang was not sure whether Gu Chen really knew what the problem was, so he asked again: "Gu Chen, tell me your explanation."
"Okay." Gu Chen nodded, smiled and said, "This is how I understand it. The key to the problem is not the feathers, but the spiders on the tree outside the window."
"spider?"
Many people exclaimed: "Does the time of committing the crime have anything to do with spiders?"
"Yes, spiders can talk? I don't believe it." Lu Weiwei couldn't wait, and she quickly said: "Junior brother Gu Chen, please stop being so secretive and tell everyone what you know."
"Okay." Gu Chen smiled calmly: "The spider on the big tree played a key role in the detection of the case. According to the proportions, it can be seen that this is a tarantula about 25 centimeters long."
"This kind of tarantula is more poisonous than ordinary spiders. It relies on venom to kill its prey after being caught in the web before eating it."
"And the damaged web of this spider still has the white feathers on the feather pillow, so I can conclude that the crime was committed at night, because this type of tarantula is mostly active at night, and they often weave webs in the evening, and the next day
Break the net again in the morning."
In this way, everyone will quickly understand the time when the crime was committed.
If there are feathers stuck to the damaged spider web, it can only mean that the crime was committed at night.
The murderer is also obvious, that is the gambler Liu mentioned in the title.
"That's not right." Seeing that Gu Chen's analysis was accurate, Xiao Yang asked deliberately to make things difficult: "What if it was a feather on the ground and it floated to the damaged spider web outside the window, wouldn't it be impossible to determine the time of the crime?
"
Xiao Yang's doubts immediately aroused the agreement of many people.
Reasoning is all about logic. Although Gu Chen's idea is well-founded, if the situation mentioned by Xiao Yang occurs, the reasoning of the time of the crime will be difficult to judge.
"Gu Chen, your reasoning is not rigorous." Zhao Guozhi, who was standing aside and paying attention silently, also spoke at this moment.
However, Gu Chen was not embarrassed. Instead, he smiled lightly and said, "This factor can be eliminated."
"Huh? How do you say that?" Lu Weiwei, who was on the side, was as curious as a primary school monk who listened attentively.
"Because it is affected by the falling trajectory of the object." The data flow in his mind surged rapidly, and Gu Chen shared what he knew:
"When the feather in the question falls, its volume, shape and density will affect its trajectory."
"Generally, density is a physical quantity that represents the mass per unit volume of an object. If the volume is the same but the density is different, the mass will be different. Objects with different densities fall at the same time in a vacuum, and their motion trajectories are consistent."
"When the density and mass are the same, solid and hollow, pill-shaped and sheet-shaped objects will have different falling trajectories. This is mainly related to the size and direction of the air resistance it encounters. Therefore, the situation you mentioned will not occur.
."
Everyone was amazed again.
Having said this, Xiao Yang was already very satisfied. He had used many misleading clues, but Gu Chen could successfully avoid them.
Perhaps this is Gu Chen's talent in some aspects, but in the criminal investigation team, this is an important technique for solving crimes.
The various cases that the criminal investigation team has to face will always make people busy, but the most troublesome thing is the time to commit the crime.
Especially in the face of various cunning criminals, they often have strong anti-reconnaissance capabilities.
Xiao Yang has participated in solving countless cases in the criminal investigation team over the years. In terms of clue collection and accurate judgment and reasoning, he thinks Gu Chen's reaction is excellent.
Gifted, maybe it refers to people like Gu Chen, right?
Thinking of this, Xiao Yang couldn't help but think back to when he first entered the police force.
I am also a trainee police officer, and I am also facing the test of a veteran. The difficulty of the questions I had at that time was even not as difficult as it is now.
In terms of reasoning time, it took Gu Chen in front of him less than eight minutes to solve the problem he had carefully prepared.
The last time, it took me nearly an hour.
The gap... suddenly formed.
Xiao Yang didn't understand, how did Gu Chen develop this ability?
How difficult is it to practice this kind of technology? In terms of reasoning technology alone, this is completely different from training in the police academy. There is a huge gap between theory and reality.
Xiao Yang himself specialized in criminal investigation at the beginning. During his school days, his grades in all subjects were among the best, and he thought he could show off his skills in the police force.
But when I finally came to the police force as a trainee, all the theories piled up suddenly became worthless.
No matter how many theories are piled up, it is not as good as the empirical judgment of an experienced criminal policeman.
Nowadays, police academy students generally use their winter and summer vacations to contact the corresponding police station to practice their work abilities in advance.
But generally, those who can intern in the criminal investigation team are even rarer, and a certain amount of social connections are required, not to mention that Gu Chen's winter and summer internship unit is still a little-known non-staple food supermarket.
"Do supermarkets sell walnuts that have been squeezed by the door? Can eating them nourish the brain?"
Xiao Yang once again had doubts about the 5% that had existed for many years.
