The next day. Pen "Fun" Pavilion www.biquge.info

When Yang Rui came to the Stockholm Police Station again, the office area on the second floor was twice as many police officers.

Some policemen with high-ranking epaulettes also appeared inside, and they stood with Sherwood, chatting lightly.

By the door, several reporters were holding cameras, looking for an angle.

Yang Rui was a little surprised by this, but it was not surprising.

Although I don't know whether the reporters attracted the high-level police station or the high-level police department attracted the reporters, as long as there is the smell of fresh meat, it is not surprising whether it is a wolf or a wolf.

Yang Rui's yellow skin, without introduction, was recognized by the reporters, they were not numerous, but they still blocked the way, and asked: "Mr. Yang Rui, I heard that you are going to use high technology to challenge the Marle case, is that so?"

There aren't too many reporters to talk about, but fewer reporters mean it's harder to answer.

Yang Rui looked up at Sherwood, Director Sherwood nodded slightly, and he didn't know if he nodded in greetings or agreed with Yang Rui to answer the question.

Yang Rui didn't think about it so much, and said first: "It can't be said to be a challenge, we just want to provide the police with more tools to handle cases, so that they can have more choices when investigating." The PCR machine is a tool, and it is still the Stockholm police who challenge the Malle case, and we are just the logistics staff. ”

This answer can be called humble, and the policemen who can understand English nod silently, and their attitudes have changed for the better.

If Yang Rui said that he wanted to replace the work of the police, they would naturally not be happy.

"Mr. Yang Rui, some people say that the Malle case was completed by two murderers, what do you think of this?" A reporter looked like he was fighting for the page, and asked questions with urban strange talk.

Yang Rui said indifferently: "We are just tools, our PCR machine will give as much information as possible, as for how to interpret the answer from this information, it is the job of the police." ”

Yang Rui's thinking today is very clear, he is here to promote the PCR instrument, not to fight with the police.

In fact, his idea is just the opposite, he hopes that more police and police departments will use PCR, that is, the use of DNA identification technology, on the other hand, Yang Rui does not want PCR to be considered by society as a simple criminal investigation technology, which would be too insulting to the value of PCR, as if X-ray is a simple medical device.

"Mr. Yang Rui, how confident do you have in today's test results?" The reporters found that they couldn't dig out the fierce material from Yang Rui, so they reluctantly returned to the topic.

Yang Rui said: "I have 100% confidence. ”

"Why?" the reporter finally grasped a topic and hurriedly asked.

Yang Rui shrugged his shoulders and said: "The accuracy of DNA comparison is very high, and the probability of test failure is very small through the amplification of the PCR instrument." ”

Stopping, Yang Rui felt that he couldn't say it clearly, and said: "It may be easier to understand if I describe it like this." If the police use DNA to judge the murderer, there will be no two people in the world's 6 billion people with the same DNA, not only that, judging from the probability, in the last few thousand years of human history, all human DNA born will not be exactly the same, so I am 100% confident that such accuracy will be used as the basis for judgment. ”

"Won't there be any human error?" a professional reporter said sharply: "How to avoid human error?"

Yang Rui smiled, looked at the reporter, and said: "I am a scientist, within the scope of science, try to achieve the goal as much as possible, your request, maybe you can ask God to decide." ”

The crowd smiled softly.

The reporter just didn't hear it, and said, "You mean, there will be human error?"

If it was in the form of a normal question and answer, Yang Rui might have answered a "of course" at this time, and then explained in detail.

However, being in a foreign country, Yang Rui became more sensitive, and he thought about it one more step, what would happen if the reporter reported the PCR out of context?

The first thing I encountered was the court's questioning.

Unlike later generations, in the current 86 years, no country has recognized DNA evidence, in other words, conviction with DNA itself needs to be disputed.

Yang Rui can't leave such a handle in public.

At least, he could not leave such a handle as the inventor of PCR, as a well-known genomics expert.

Thinking of this, Yang Rui waved his hand without hesitation and said, "What we are discussing today is not the problem of human error, but to look at the test results, how about we complete this work first?"

He looked like he was asking the people below, his eyes looking at Sherwood, the director.

The police chief is also a very political figure, he noticed Yang Rui's dodge answer, immediately thought of the corresponding result, and said in a flash: "Let's take a look at the test results now, if the test results meet our expectations, the Stockholm police may use this technology for the detection of the Malle case, everyone, please let go." ”

The people in the office got out of the way, allowing Yang Rui and Sherwood to walk into the room where the PCR was placed.

"Tell me about it. Yang Rui nodded to Huang Mao and Tu Xian.

"How do you introduce it?" Huang Mao and Tu Xian were both a little stage frightened.

"Tell me what you've done in the past two days. Yang Rui turned around and smiled at the camera.

Tu Xian and Huang Mao pushed for a moment, Tu Xian stood up and said in English: "Yesterday, we collected the DNA of the police officers, and in addition, we got a bundle of hair with skin pockets, and after that, our test is to determine who the owner of the hair is. ”

The police officers who took part in the test smiled, and some raised their hands.

In front of the media, the Swedes have also become a little more lively.

But that's about it.

"Now, ask the officers to give the answer to Chief Sherwood, and we'll reveal our answer later. After Tu Xian finished speaking, according to Yang Rui's arrangement in advance, a photo of a bundle of hair, as well as photos of many police officers who participated in the test, were pasted on the whiteboard in front of him, just like a crime drama in Europe and the United States in later generations.

The reporters soon found this method extremely intuitive and took pictures one after another.

The police officer who led the team also handed Sherwood the envelope with his name written on it.

Sherwood didn't immediately take it apart and looked at it, but said first: "Mr. Yang Rui, please release your comparison picture." ”

"Tu Xian. Yang Rui shouted.

Tu Xian coughed, took out two rolls of paper from under the PCR instrument, and said: "The principle of the PCR instrument is actually to expand DNA, and we have now made an image of DNA, and you can see that there are two images of DNA that are consistent......

As he spoke, he opened the two rolls of drawings and hung them on the other whiteboard next to him.

The two specially printed drawings are both full-color, colorful blocks, concave and concave in a line, forming a peculiar figure.

"This is a drawing. Tu Xian pointed for a moment, then unfolded another, and said, "This is the B drawing." As you can see, Diagram A and Diagram B are the same......"

"What about the other diagrams? Let's look at the inconsistencies. Someone among the reporters shouted.

Tu Xian glanced at Yang Rui, benefited from it, and unfolded all the other drawings.

Needless to say, everyone realizes that other drawings are different.

"It's beautifully done. A female journalist gave a compliment.

Tu Xian sullenly said, "This is automatically generated by the machine." ”

"Tu Xian, read the owner of the hair you confirmed. Yang Rui reminded.

Tu Xian let out an "oh", lowered his head to check, and said, "We confirm that the owner of the hair is, Ackerman." ”

He said it was mediocre and less passionate.

Fortunately, all the people who came today were print reporters, and they didn't care about his passion, and they turned their eyes to Sherwood again.

Sherwood smiled slightly, opened the envelope in front of him, glanced at it, and then turned to the crowd.

Ackerman's name was printed in flower script and displayed to everyone.

In the office area, there were bursts of surprise.

"Officer Ackerman, please stand up. Director Sherwood shouted again.

I saw a tall Swede-looking Swede, smiling and raising his hand.

"Officer Ackerman, was it your hair that you left yesterday?"

"It's mine. Ackerman laughed twice.

The reporters gave a soft applause, but the Swedish police officers present were quite wooden.

Yang Rui pursed his lips and thought to himself, if this was played in the United States, it would have turned the world upside down.

"Director Sherwood, so you are going to use new technology in the Malle case, right?" a reporter pointed out at this time.

Sherwood nodded slightly and said, "Not only in the Malle case, but we will also use PCR technology in multiple cases. ”

Yang Rui was stunned, this was a bit unexpected for him.

However, from Yang Rui's point of view, this is just a good thing, and he is not afraid of being tested in technology.

In an instant, Yang Rui became excited again, and it was rare to see the technology he developed in his lifetime to be used to solve serial murder cases.

……