#115. Results. 23
Kim Tae-hyun, who had been silent for a while, opened his mouth.
-What do you want to try…?
That too from the National Institute of Scientific Investigation.
“I want to look around.”
There were several parts to the National Institute of Scientific Investigation.
Broadly speaking, it includes forensic genetics, forensic toxicology, forensic chemistry, forensic law, digital forensics, etc.
Woojin wanted to see it with his own eyes.
Science continues to advance.
It seemed like I might be able to get some information there that I didn't know about.
If that were to happen, it would be of great help in cognitive inference, such as profiling.
They said that studying is something you do for life.
Woojin was always aware of it and kept it in his head.
All the things I wanted to try and new experiences fell into that category.
I was also curious about the thoughts of people working at the National Forensic Service.
And there was something else I wanted to try the most.
How can a lie detector detect your own brain waves?
It wasn't just the brain.
I also wondered what the psychology major who oversees the lie detector would think of me.
-Do you want to take a look?
"yes."
There was nothing special about the National Forensic Service knowing his identity.
I have already guided you that way, and you must reveal your identity.
A situation where since a cause was given, a result must also appear.
Since the law of causality was established between cause and effect, it was natural that physical theories would be derived.
Since you've made things according to plan, all you have to do is move normally to get results.
Of course, criminals run away or hide in the hope that this logic will be broken.
“When can I go?”
-When will I have time?
“I don’t mind right now.”
-hmm…….
Woojin's voice, digging into Kim Taehyun's ear, sounded like he wanted to go now.
-Where are you? I'll go there now.
“I’ll send you the address by message.”
-okay.
After Woojin finished talking on the phone, Park Inhyeok, who had been drinking water and observing Woojin, asked.
“Do the police know too?”
The way they talked without hesitation made it seem like they were quite close.
The fact that he had ties to the police was no big deal.
The important thing was that Woojin, who had tremendous observational skills, knew.
Park In-hyeok threw out the comment as a joke.
“Do you know the inspector by any chance? Hahaha!”
“I know.”
Park In-hyeok blinked his eyes.
What the… … .
This is the first time I've seen someone like this come out no matter how much I try to hide it.
“As I said before, can I order one more pasta?”
The bizarre sight of someone saying something completely unexpected is also new.
“… … Yes, of course, of course.”
So Woojin ate the pasta he ordered deliciously.
In this way, Park In-hyeok discovered another new side of Woo-jin.
The thing is, when you ask him to talk while he's eating, he doesn't respond well.
After savoring and swallowing the food in his mouth, he finally spoke.
I could think of it as table manners, but I couldn't help but think of it more as the former.
Woojin, who had just finished eating his pasta, said while wiping his mouth.
“Thank you for bringing me to this delicious restaurant. The tea is unusual and I don’t think it will suit me. I will just appreciate your kindness.”
Park In-hyeok smiled awkwardly and asked again as before.
“Do you really need anything?”
“Yes. No. I think I should get up.”
At that moment, the door opened with a chime and Kim Tae-hyun came in.
“I need to go somewhere.”
Park In-hyeok laughed bitterly.
“Oh my… … . I didn’t waste your time, did I?”
“No. I’m sorry I woke up first.”
Park In-hyeok waved his hand.
He didn't want his benefactor to apologize to him.
Woojin shook his hand, got up from his seat, and approached Kim Taehyun.
“Detective Kim, this place is delicious. Come here with Detective Choi sometime.”
“What’s wrong with just eating noodles and walking around with that guy? And I don’t want to come to a place like this with that guy.”
* * *
Kim Tae-hyun's car was driving towards the National Forensic Service.
I felt really bad for bothering Woojin at the National Forensic Service, but when they came out like this because they were curious about Woojin, my heart felt a lot lighter.
I received a lot from Woojin.
so.
“Woojin, where do you want to look around?”
“I want to look around here and there.”
“Okay. This guy is also close with the people at the National Institute of Scientific Investigation.”
It was Kim Tae-hyun who really made use of his connections in order to catch the criminal.
“A profiler came to the police station last time. Do you know what he said?”
"well."
“How do you catch a criminal before the forensic investigation begins? I came because I was curious. That’s why I said. A detective’s intuition! I don’t trust it… … .”
Woojin, who was listening to Kim Taehyun, opened his mouth as if answering.
“Then let me say it like this.”
Kim Tae-hyun stopped his car at a red light and looked at Woo-jin.
“Assuming a violent crime has occurred, there are 20 people under suspicion, 12 of whom are men and 8 are women. Let’s assume that Detective Kim Tae-hyun’s probability perspective that the culprit is a man is A. If there is no additional evidence in this assumption, then dividing the number of male suspects by the total number of suspects… … .”
Mathematical formulas began to flow out of Woojin's mouth.
“It’s 0.6. On the other hand, if we assume that the culprit is a woman, it’s 0.4. But what if additional evidence is discovered and a new case B occurs?”
“Additional evidence?”
“Yes, the long hair found in the new case B. If we assume that there are 10 people with long hair among the suspects, a subset is created. With the occurrence of case B, 20 people are narrowed down to 10 suspects. If we calculate the probability reliability of the 10 suspects, it is 0.5.”
Outside the window, I saw a child walking toddling while holding his mother's hand.
A child can be anything, but he or she cannot be anything.
But if we look at the degree to which the mother smiles when looking at the child, and if we see the shape of the mother's mouth when speaking, even though we cannot hear it, we can infer that the world that the child can experience is very positive.
Woojin opened his mouth again.
“At this time, joint probability is the probability that A and B occur at the same time… … .”
Kim Tae-hyun, who was driving, was blankly staring ahead.
At first, it was vague, but as Woojin's words became deeper, it became really difficult to understand.
Instead of saying he couldn't understand, Kim Tae-hyun conveyed a different meaning.
“Woojin, up until now, you haven’t just caught the criminal by looking at him, but you’ve also calculated things like this?”
Woojin nodded his head slightly.
“Yes. Even the angles and positions of seemingly ordinary objects are important. If you look at ordinary things in an unusual way, they show you the truth.”
“Woojin, by any chance, I’m asking just in case?”
“Yes. Go ahead.”
“When you touch an object, it doesn’t show you something, right? What is it? Psycho… … What is it?”
“Psychometry?”
“Oh! That’s right! Psychometry! You’re not looking at that kind of thing, are you?”
“I can’t see that because my eye structure is the same as that of other normal people.”
Kim Tae-hyun wanted to say, "Everything else is not ordinary… " but he couldn't say it out loud.
Because Woojin was the younger brother who always pursued the ordinary.
“I didn’t know Woojin was even calculating.”
“Detective Kim may be doing it too. It’s just a different method. Detective Kim has a good sense of intuition. I think that when you work on something and become expert at it, your sense of intuition becomes closer to the essence.”
Kim Tae-hyun scratched his head.
He kept saying that he had a good feeling, but in reality, the probability was significantly low. No, it was gradually increasing these days.
Why?
It was because she was also experiencing changes after meeting Woojin.
“Ugh… … My little sister speaks really well. Hahaha!”
I felt good when Woojin said that.
* * *
The car driven by Woojin and Kim Taehyun was able to reach its destination.
As we entered the entrance, the powerful inscription carved into the large stone caught our eye.
Woojin muttered while looking at it.
“The power of science to reveal the truth… … .”
The National Institute of Scientific Investigation was a place that even the general public was curious about.
It was also a place where the culmination of science was gathered.
After parking their car in the underground parking lot, Kim Tae-hyun and Woo-jin approached the elevator.
Kim Tae-hyun said.
“Woojin hasn’t told me you’re here yet. He just said you don’t have to reveal your identity right away. You said you wanted to look around, right? Where do you want to go first?”
When Woojin wanted to try something, Kim Taehyun wanted to help him even if it meant rolling up his sleeves.
“Can I take a lie detector test?”
“Huh? Lie detector?”
Kim Tae-hyun, who had been asking question curiously, laughed heartily.
“Is that something you want to try?”
"yes."
“I’m close with that person too. But I don’t know if he’ll be there. Just a moment.”
Kim Tae-hyun immediately brought the cell phone to his ear.
The other person answered the phone right away.
“Researcher Kim Hyun-ja. Loyalty! Have you eaten?”
It was researcher Kim Hyeon-ja, an expert in lie detection.
-Oh my. Detective Kim, aren't we talking on the phone too often?
“Nothing else, but you know that unidentified DNA? I had a hard time bringing that younger sibling here, and he said he wanted to get tested. I saved myself and the researchers a lot of work, so I wanted to let him get what he wanted.”
Immediately a curious voice was heard.
-Oh… … . You finally arrived. That’s because I have free time now. I wanted to see you too.
It was pure curiosity.
Before the National Forensic Service could determine the direction of the criminal, the person who had been identified and caught first visited the National Forensic Service, so I couldn't help but want to see his face.
“I’ll go up right now.”
Kim Tae-hyun shrugged his shoulders and said after finishing the call.
“What do you think? This is the kind of person my brother is. He’s a free pass.”
Woojin raised his thumb.
“I always thought Detective Kim was a great person.”
“I want to hear that from someone else.”
If I had heard this from someone else, I would have felt proud, but when I heard it from Woojin, I wasn't very impressed.
In that way, I was able to use the elevator and walk down the hallway to get to the office where Kim Hyun-ja was.
When Kim Tae-hyun knocked, a voice came from inside.
“Come in.”
Kim Tae-hyun went in first, and Woo-jin followed him, his eyes shaking slightly left and right and up and down.
It was a grasp of the structure and contents of the office.
“Welcome.”
Kim Hyun-ja's gaze, as she shook hands with Kim Tae-hyun, was fixed on Woo-jin.
I had a vague guess that he was in his 40s or 50s, but isn't he a lot younger than I thought?
His eyes searched all over Woojin.
Kim Hyun-ja made appropriate gestures and made appropriate remarks so as not to let Woo-jin see her observational gaze.
Woojin found such detailed attention to be interesting.
Kim Hyun-ja didn't think that her gaze had been caught, but Woo-jin's gaze, his gestures, gaze treatment, and facial expressions were being interpreted in his head.
On the other hand, Kim Hyun-ja was oblivious to Woo-jin’s gaze.
“Nice to meet you. My name is researcher Kim Hyeon-ja.”
“Hello. My name is Shin Woo-jin.”
So, how would researcher Kim Hyeon-ja, who majored in psychology and is an expert in lie detection, view herself?
It was something I couldn't help but wonder about, even metacognitively, as it allowed me to discover myself in a new way.
