Forensic doctor: I only love dissecting corpses and idolizing Hannibal

Chapter 26 Listen well, you can’t understand it anyway (please support, seventh update)

Chen Fan stood on one side of the conference room, and there were some forensic doctors sitting on both sides.

Wearing white coats, everyone dressed up carefully and looked very serious. It can be seen that they attach great importance to this meeting.

Chen Fan said: “Meeting? I will give a speech alone, right?”

Liu Xi said: “Yes, your fingerprint recovery still needs to be implemented. Too many people have proposed this project, and now there is progress. Everyone Everyone wants to give it a try and listen to see if there is a new direction.”

Chen Fan said, “Do you understand?”

Arrogant, simply arrogant.

The director said: “These people have dissected thousands of corpses and have handled many cases. There are countless fingerprints and so on. How is it possible?”……”

An old man pushed up his glasses and said, “We try our best to listen.”

The director immediately shut up. ,

Chen Fan said: “Actually, the method is very simple. First of all, we have to understand the growth direction of fingerprints. This is biological knowledge. You guys should know a little bit about it.” Everyone nodded slightly, and a few people didn’t quite understand

. Biology didn’t nod.

Chen Fan said: “Hey, don’t be like this. I really can’t tell you that biology is the foundation. To restore fingerprints, we must understand the growth direction of fingerprints, which is why fingerprints exist.。”

“If you don’t understand, don’t ask questions. Just record it yourself and go back to tutoring later. ”

Wang Yanan, who was standing near the door, suddenly had an illusion, as if the teacher was explaining math problems to him when he was in school. It seemed that in the next second, as long as he was

stunned, he would directly evolve from the age of dinosaurs to the future. World.

Everyone looked at Chen Fan.

Chen Fan continued: “There are two fingerprint principles. Everyone’s fingerprints are different. The second one is the principle that fingerprints will remain unchanged for life. That is, on the day you die, your fingerprints will remain the same. certain。”

“What are the characteristic points? As we all know, there are four bifurcation points, and each bifurcation has a hundred kinds of characteristic points.、”

“: starting point, end point, bifurcation, combination. Each fingerprint has about 100 characteristic points. After combination and arrangement, 61 digits are calculated using 4 to the 100th power (4100), that is, 4100=1.6*1060 combinations. Then, based on the population of about 50 who survived in a century at that time Calculated in billions, each person has ten fingers, a total of 50 billion (5*1010) fingerprints, so (1.6*1060)/(5*1010)=3.2*1049. This formula means that it takes a 50-digit century to have two duplicates. of fingerprints. The identical rate of fingerprints is only one in six billion. Even if there are more than 6 billion people in the world, from a genetic and statistical perspective, it will only appear once every 6,000 years on average.” Wait a moment, what I just said

is Biology, let’s talk about genetics, statistics, right?

Everyone looked at the formula given by Chen Fan, and Chen Fan continued: “So, how to reduce this ratio? The way I do it is actually a screening method, which you can understand as mathematics.

Chen Fan thought for a moment and continued: “Fingerprints from every region have similar points, and fingerprints from every country also have similar points. By marking the similar points, we can quickly locate the person’s area. ” ”

Chen Fan turned on the computer.

He waited silently for a minute. It was good. The computer was turned on.

After connecting to the intranet, Chen Fan took out a few fingerprints and said, “What I see now are the fingerprints I found ra

[ Read more novels by visiting our website: Knight Novels ] ndomly. How can I reduce the number of fingerprints? ?”

“Here, here, and here, these bifurcation points are all surprisingly similar, but why are the changes different? The starting point is here.。”

“I call this the fifth bifurcation point.。”

“There are many changes in the fifth bifurcation point, and there are many walking trajectories, but compared with these, they are much less. The bifurcation point begins to change, and the fingerprint begins to produce new changes. Although the theoretical probability of this change is infinite, , mathematics can calculate a given number……”

Chen Fan spoke very seriously, and Chen Fan himself felt that he spoke very slowly.

But no one below could understand it at all.

The director asked the forensic doctor beside him in a low voice, “Why don’t you understand?”

“After biology, I started to get confused……”

You don’t understand the emotional side, do you?

Chen Fan took out half a fingerprint and said: “This is the fingerprint found that day. I put in the fingerprints from the region, age, weight, height and other coefficients, and then got a number.。”

“By comparing the numbers with the fifth bifurcation point, we can find the direction of development. Then, this line will be enough.……”

Someone raised their hands and said: “Doesn’t that mean that it takes a lot to complete the restoration?”

Chen Fan said: “Wrong, I only need to find seven. There are four in half a fingerprint. I will find three more.” That’s it。”

“What if it’s not half? Is there not a feature point? ”

Chen Fan frowned and said: “Which department does this young man belong to? Throw it out. What the hell is the problem? You don’t have a single characteristic point. Just say it’s a blank piece of paper and there are no fingerprints. You have no fingerprints. How can I restore it? I’m recovering, not doing spells for you?”

The man sat down silently, and the teacher next to him rolled his eyes at him. You really made me look good.

Chen Fan said: “I like the seven characteristics very much, so Well, you only need to restore a few feature points, then put them into the fingerprint database and start comparison.

The director said: “Is it easy to achieve what you have done? “”

“It’s difficult, I’m the only one in the world who knows how to do it. ”

What you said is the same as what you didn’t say.

Chen Fan said: “But I will list the changes at the fifth bifurcation point into table coefficients. Then I will search according to the coefficients and find the corresponding changes. Follow this change. , eighty-nine percent, you can recover your fingerprints……”

Is eighty or ninety high?

Very high, how high?

You can basically find someone。

“Can this be used as evidence? ”

Someone asked a question.

Chen Fan said: “No, there is an error, and it has not been recognized. Moreover, I don’t want to be recognized. After all, it involves judging others’ guilt, and it is useless to confirm it.。”

“Then this intersection……”

Chen Fan said: “Director, I am bad at computers, and my forensic clinic really needs fingerprint equipment.。”

“I can get you the best computer, don’t even think about the instruments.……”

“Then give me some broken ones. I can always assemble them myself later.……”

Just as the director was about to say something, the forensic doctor on the side said: “He agreed, and we will provide it to you, but the condition is that the assembled instruments will be assembled. You have to tell us the assembly drawings and so on.”……”

Ye Qingmei was speechless. They were all old silver coins, one by one, and there was no loss at all.

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