Wendy had been sent home by her bodyguard, and Bobby accompanied Liang Xi to eat hamburgers and read information at the detective agency. Bobby knew that Liang Xi was doing handwriting identification, but he didn't know how Liang Xi was doing handwriting identification and the needs of handwriting identification. Police

The physical evidence appraisers and experts from the third-party appraisal agency unanimously identified the handwriting as Wen Xi's. Does Liang Xizi think he is more professional than the experts?

The information included books, writing pads, diaries, and graffiti. Liang Xi slowly looked through the information one by one, and occasionally compared the suicide note carefully. Liang Xi was completely immersed in it when he was doing something, and Bobby took less than five minutes.

I felt bored and wandered around the detective agency.

The detective agency also has a back door, which is a corner iron staircase. The entrance is at the back door of the cafe. Bobby untied the iron chain, pushed open the iron door, and stood at the iron staircase to breathe fresh air. At the entrance of the iron staircase downstairs, two people

The standing bodyguard looked up at Poppy and continued to stand. Poppy was curious, why did the detective agency install an iron door that was sealed from the inside?

Who doesn't know how to reason? Poppy looked at the back door and found that there was no camera. After careful speculation, the back door was sealed to prevent someone from entering the detective agency through the back door. A new question came, why should a door be left? Is it necessary for fire protection?

Liang drank the black tea and saw Bobby stroking the iron door in the opposite room through the corridor and asked: "Do you still have this hobby?"

Bobby asked: "I don't understand why this door is left?"

Liang Xi pointed to the stairs: "The width is too small to carry things."

The answer was so simple, Liang Xi said: "Don't touch it everywhere, there is an escape mechanism in that room."

Liang Xi took the hot black tea and returned to his desk to continue working. He had promised that Bobby would not come back to disturb him in a short time. As expected, Bobby was fooled and began to look for non-existent escape mechanisms. After driving away Bobby, Liang Xi could get back to work.

.

Handwriting identification is very interesting. Until now, computers have not been able to completely replace manual handwriting identification. Under normal circumstances, computers can do a good job and can distinguish fake handwriting from ordinary people. But professional masters, such as professional handwriting identification experts, can make fake handwriting.

It is difficult for computers to distinguish. The reason is that there are many variables in handwriting, such as writing posture, writing tools, pads, light, sound, mood, etc. When two close handwritings appear, there is a certain error rate for both computers and humans.

It is more difficult to prove that the suicide note is fake than to prove that the suicide note is genuine.

Liang Xi's idea is: Assuming the suicide note is true, whether the ex-boyfriend killed Wen Xi or Wen Xi jumped himself, it is none of his business. Although the ex-boyfriend will not get a medal for being brave and helping others commit suicide, after all, it is

It's a help. The key point is that the suicide note may be fake. From the description of the case, it is unlikely to be a premeditated murder. The police obtained the suicide note 12 hours after the incident, indicating that the suicide note was forged within these 12 hours. Need to

It is very difficult to forge a suicide note that can pass the appraisal of a third-party expert in 12 hours, and there is only one possibility.

…

An hour later Bobby came back: "There is no mechanism at all."

Liang Xi didn't even raise his head: "You can't find it."

Poppy: "Then I won't look for it either. Have you found anything?"

Liang Xi looked through Wen Xi's 12th grade homework book, which is equivalent to the second year of high school: "From this homework book, you can see obvious changes in Wen Xi. The homework was very neat at first, and then the number of homework decreased, and he focused on coping. I found that Wen Xi

There are two types of Xi’s handwriting. The first type is this exercise book, all written by herself. The second type is this one.”

Liang Xi picked up the 13th grade homework book: "The handwriting is more scrawled, but that's not the point. The point is that she copied the 13th grade homework. You can see the handwriting, which looks very irritable and messy. The handwriting of the suicide note is neat and clear. Leave

After middle school, Wen Xi hardly wrote. If the suicide note is fake, then the reference information of the forger must be a text written before the 12th grade."

Liang Xidao: "I need you to classify the remaining information."

Bobby refused: "I paid the detective fee."

Liang Xidao: "Do you know why I only offer one hundred?"

Bobby asked: "Why?"

Liang Xidao: "Let me ask you a question first, are you doing it for Wendy, Wen Xi, or justice and truth?"

Bobby thought for a while: "Of course it's justice and truth."

Liang Xixiao: "You don't believe the conclusions of the police and the appraisal agency, but you believe the eight-year-old girl's side of the story. Is this what you understand to be justice and truth?"

Poppy chuckled: "It has something to do with Wendy, too. I couldn't bear to see her sitting outside your door wiping her tears. Since she trusts you, I hope you can give her an explanation."

Liang Xidao: "I can answer you now. The reason why I offer a hundred is because you have humanity. If I am wrong, you don't have to help me."

Poppy pointed to the one-meter-high materials on the desk: "Are these unorganized?"

Liang Xi said: "Thank you." Hehe!

So Bobby joined the work of sorting out the information, which also made Bobby very confused. Liang Xi flipped through the information very quickly, and only stayed on each page for three to five seconds before turning over. Bobby asked: "Are you?

Looking for something distinctive?"

Liang Xi: "Yes! Do you know why I am so serious?"

Bobby spread his hands: "Because you want me to praise you for your professional detective spirit?"

Liang Xidao: "No, this suicide note is most likely a forgery."

Bobby was curious: "Why? Experts don't doubt the suicide note. Why are you so sure?"

Liang Xi took out a silk meter ruler (one millimeter is equal to 10 silk meters) and a magnifying glass from the drawer, and then took the suicide note. Poppy walked to Liang Xi and leaned over to check. Liang Xi measured the distance between the two sentences. The first

The spacing between the first character in the first row and the third character in the second row is about 1.7 mm. The spacing between the middle character in the first row and the middle character in the second row is about 1.9 mm. The spacing between the last character in the first row and the middle character in the second row is about 1.9 mm.

The spacing of the last word is about 2.1 mm.

Although the numerical value is small and there are errors in the measurement, it can be intuitively judged with the naked eye through a silk-meter ruler that each of Wenxi's characters is slowly sloping upward.

Bobby didn't understand: "What does this mean?"

Liang Xidao: "The spacing value of each line of the suicide note is the same. There are twelve lines in this suicide note, and the spacing of each line is exactly the same. It is impossible for humans to do it so accurately. Only computers can do it so accurately."

Liang Xidao: "Look at the most common word 'me' and words containing 'me'. There are 8 places of 'me' in the suicide note, and there are three different kinds of me. The first type is me, m

The handwriting is heavier. In the second type of me, the edges of e and m touch together. In the third type of me, the e is slightly slanted. After you list the 8 mes separately and divide them into three groups, you will find that they are exactly the same and can even overlap perfectly.

.”

Liang Xidao: "I am basically sure that a computer scanned the handwriting and then used a robotic arm to write such a fake suicide note. However, I can't find three kinds of me in the data. Having said that, I must tell you some bad news.

"

Bobby asked: "What's the bad news?"

Liang Xidao: "Those who can play such a delicate game must be professionals. They can't leave behind the original scanned text. So I can only tell you that the suicide note is fake, but I can't provide evidence to prove that the suicide note is fake."

Bobby said: "You can explain me and the distance to the police."

Liang Xidao: "The ex-boyfriend's defense lawyer does not need to explain why the spacing in Wen Xi's suicide note is the same. The evidence of finding the original text must be completed by the police. Let's use an analogy. I am a criminal and I took a copy of Wen Xi's suicide note.

Xi’s homework is scanned by the computer, do you think it’s possible for me to send this homework back to Wen Xi’s home after finishing the work?”

Poppy thought for a while and said: "Perhaps criminals like to add superfluous things? Hide the suicide note at Wen Xi's house and put the homework book back at the same time."
Chapter completed!