Something's wrong with how I'm watching anime.

Kazama slowly closed his eyes.

"How about it?"

"Cerberus couldn't help but ask."

Coming from another magical world, and belonging to the same category of items with extraordinary abilities as the Book of Seals, Kerberos was also very curious about what kind of effects it could have.

Well... how should I put it...

Kazama opened his eyes and looked at his hands.

"While reading this fantastical book, I did have a mysterious feeling, as if I had undergone some kind of change."

"But I don't feel that way anymore."

“And what about that change?” Cerberus pressed. “Where did the change occur?”

Kazama hesitated for a moment, then shook his head.

"I do not know."

"Could it be a failure?" Cerberus murmured. "This method of using Clow Card magic to cheat really doesn't work..."

"Whether it has failed or not is still uncertain..."

"The best way to tell if someone is smart is still to do some tests."

"Wait a minute..."

Kruberos took out the phone that Kazama had given him last time and started looking something up.

A moment later, Cerberus handed the phone to Kazama.

The above is a set of questions.

"This is a calculus problem; it must be quite difficult..."

Kazama looked at the phone Cerberus handed him, and his face immediately darkened.

The question is indeed a calculus problem, but it's about far Abelian geometry.

So-called far Abelian geometry is the highest level of algebraic geometry, and even a PhD in mathematics would find it daunting.

"Whether someone has attained wisdom or not isn't tested like this..." Kazama said helplessly.

Kazama couldn't solve the problem presented by Cerberus because he had no background in the subject.

"Wisdom is not only related to intelligence, but also to the accumulation of knowledge. Just like having enough materials but no blueprints, you can't build a skyscraper."

"The testing method should be like this..."

Kazama was looking for something on his phone, then stopped scrolling and stared at the screen.

Ten seconds later, he closed his eyes and handed the phone back to Cerberus.

"This is..."

Cerberus stared blankly as he read aloud what was displayed on his phone.

Pi?

Chapter Thirteen: Human Observation

In the original novel, *The Book of Wisdom*, the book's effect is to turn young children into near-omniscient monsters.

But the notion of near-omniscience is itself a fallacy, because information is infinite. The apparent omniscience displayed by young children is based on the amount of information they can access.

Therefore, the true effectiveness of "The Book of Wisdom" lies in enhancing intelligence and the ability to acquire knowledge, which is also known as 'memory'.

Human intelligence is assessed on multiple dimensions, and memory is one of them.

Memory is known as the raw material warehouse for human cognitive activities. All thinking is based on information taken from memory as raw materials in order to generate thought processes.

Testing memory is also very simple.

The value of pi, displayed on mobile phones today, is one of the most important constants in mathematics.

In theory, the number of digits after the decimal point can be extended indefinitely. In ancient times, using geometric analysis, the maximum number of digits after the decimal point was ten. However, with the invention of modern computers, the number of digits after the decimal point depends solely on the computational power and time required.

If Kazama Yu remembers correctly, the Guinness World Record for calculating pi to a certain number of decimal places belongs to some bored Japanese person. This person apparently used a home computer to calculate it to ten trillion digits.

"3.14159265359....."

Kazama Yu recited a long string of numbers, while Kruberos stared blankly at his phone, only stopping when Kazama Yu had memorized more than fifty digits.

“No mistake…” Cerberus said blankly.

No one would be so bored as to memorize such a long number of pi.

In other words, the string of numbers that Kazama just recited was indeed memorized within the last ten seconds.

Don't underestimate these fifty-odd digits.

The memory of numbers is different from the memory of words. Word symbols have specific meanings, while numbers are just simple symbolic tools that cannot be memorized through understanding. They can only be memorized through pure memory.

Based on current performance, the Book of Wisdom has indeed played a role in improving memory.

Kazama Yu pinched the space between her eyebrows:

"I think I understand how the 'wisdom' described in this book is used."

First of all, this is not a passive skill.

The ability to remember everything at a glance requires Kazama to actively and deliberately memorize something.

If everything you see is imprinted in your mind, then it's called hyperthymesia.

"It needs to be initiated by my own subjective consciousness...that's good."

Kazama nodded in satisfaction.

"After verifying the memory, there are still a few aspects to confirm."

Besides memory, intelligence has several other dimensions.

"Then how can we verify it?" Cerberus asked.

"I need to go out for a bit..."

Kazama did not immediately answer Cerberus's question, but instead spoke and grabbed Cerberus.

Every evening, Kazama would usually take Cerberus out for some fresh air. Although the allure of the outside world was nothing compared to the pile of game cartridges and snacks at Kazama's house.

While the summoned creatures in Cardcaptor Sakura's story often serve primarily to be cute, Kazama doesn't have an overflowing girlish heart. He still needs Cerberus's role in sealing the guardian beasts, and he doesn't want to see the lion actually turn into a harmless, homebody dog.

The two soon arrived on the street.

When I got home after having dinner with Liu Kai, it was almost seven o'clock. Then, after confirming the loss of control over my superpowers, drawing the "Fairy Door" and the "Book of Wisdom," and then using the Clow Cards to read the "Book of Wisdom," it was already past eight o'clock.

However, for humans who prefer to roam at night, life is just beginning.

Kazama walked silently in the shadows beside the streetlight, staring straight ahead.

But when they reached a secluded spot, they heard Cerberus's hushed voice.

Inside Kazama's handbag, a pair of yellow animal ears peeked out from the unfastened necklace—it was Cerberus.

Are you observing?

Although Kazama kept his eyes glued to the road and walked without stopping, Kerberos noticed that Kazama was constantly observing the pedestrians on the road.

"Um..."

Kazama nodded slightly.

Human observation ability is also a part of intelligence.

If memory is the warehouse of knowledge in the human brain, then observation is the ability to fill that warehouse.

Upon hearing Kazama's words, Kerberos was about to say something, but then he shrank back into his bag.

Because someone is coming from ahead.

No, to be precise, Kazama kept walking forward and encountered people.

She was a young woman about the same age as Kazama.

She was beautiful, with exquisite makeup, and wore a light blue halter-neck dress. Her long hair cascaded over her shoulders, and she was currently squatting on the ground, shaking her head as if searching for something.

Kazama paused briefly, then continued walking. When he reached the woman, he bent down, picked something up from the ground, and then came to her side.

Excuse me...

Kazama reached out and handed the item to her.

"This is your stuff, isn't it..."

On Kazama's palm lay a crystal-clear contact lens.

The woman seemed quite startled when she saw Kazama suddenly appear beside her, even though he had given her a heads-up.

After realizing what was happening, she looked at the lens in Kazama's hand and couldn't help but show a look of surprise.

"Ah! M... Thank you."

"This is indeed what I've been looking for... Thank you..."

The woman paused for several seconds, then continued:

"How did you..."

"I just happened to see you looking for something, and I just happened to have sharp eyes, so I spotted this thing."

So I wanted to ask if it's yours...

"Since it's yours, please keep it safe."

"Thank you, thank you so much." The woman kept thanking him as she put the contact lens back in.

After thanking her, the woman wanted to say something more, but Kazama smiled and nodded in advance, saying, "No need to thank me, I have to go now."

After leaving the woman, Kazama continued forward. There were few people on this stretch of road, so Kruberos simply poked his head out of his satchel.

“Incredible… How did you know that girl was looking for contact lenses?” Cerberus asked.

"It's just the same thing: observation skills."