Reborn in 2010, the AI ​​in my mind is too powerful.

Chen Yiran stared at the official TOEFL website that appeared on the screen.

The TOEFL iBT (Internet-Based Test) consists of four sections: Reading, Listening, Speaking, and Writing. The maximum score is 120, and the test is valid for two years.

Scroll down and you'll find the exam date and location.

The most recent one was on Saturday the 23rd, and today is Thursday the 21st.

The regular registration deadline is seven days before the exam. Even paying $35 for expedited service won't make it in time; you can only register for the Saturday after next.

The next exam date is Sunday, January 31st. The registration fee is $150. The nearest test center is the Prometric Testing Centre in New Castle, about a 1-minute drive from the school.

Without hesitation, Chen Yiran registered an account and filled in the information.

Fortunately, I had bought a multi-functional printer beforehand. After scanning and uploading my passport documents, I paid by card and received my exam qualification.

After registering, he casually clicked on the free sample questions on the ETS website.

I reviewed all four sections. The reading section was standard English reading comprehension, nothing special. The listening section was similar, with a moderate speaking speed, a bit slower than everyday conversation. The speaking section was a bit more demanding, with a 45- or 60-second time limit for responses, so you couldn't just chat casually; you had to follow a structure. The writing section had two parts: integrated writing, which involved reading a passage, listening to another passage, and then writing a summary; and independent writing, which was a standard argumentative essay.

Chen Yiran downloaded several high-scoring model essays, printed them out, and read through them.

There are indeed patterns in speaking and writing. Independent writing begins by introducing your viewpoint, then presents two or three arguments with examples, and concludes with a summary. Integrated writing involves addressing the viewpoints in the listening material and the reading material, and then refuting them. Following this framework, the content doesn't need to be too in-depth.

He knew some of this in his previous life, after all, he had lived in the United States for so many years and many people around him had taken the TOEFL. It's just that he had never taken it himself. Back then, he honestly studied at the language center and passed the CET-6 before entering university. In reality, after entering university, he often couldn't keep up, especially since some professional vocabulary teachers spoke too fast for him to keep up. However, he later found that native students couldn't keep up either.

Teacher ELI mentioned before that a good TOEFL score could help me apply to better schools. I didn't take it too seriously at the time, but now that I think about it, this life is destined to be different from the last. Not to mention, I haven't even met my good friends from my last life after several days of school in this life.

Xu Li, whom she was only vaguely familiar with in her past life, seems to be developing a deeper friendship with her in this life. Chen Yiran is quite sentimental and had always felt that even if she had to change her major and was destined to make a name for herself through Jasmine in this life, at least she could spend her four years of university having fun with her friends from her previous life.

But after just one week, he felt the power of the butterfly effect. It seemed he was destined to drift apart from many people.

Since that's the case, then do your best on the exam and try to get a high score. The University of Delaware is actually quite good, probably equivalent to a 211 university in China. However, in terms of the world, its only notable program is chemical engineering, which is backed by DuPont, the state's leading university.

It's decided. I'll take a closer look at the question bank later. If it's not enough, I'll have Jasmine write it down. I'll try my best to get a high score, relying on my English foundation from my previous life. Later, I'll consider transferring to a school with a stronger CS program.

You can set aside a little time each day for Jasmine to review the necessary information, but you have to control the time, since she still has classes during the day.

He stood up, stretched, and went to the bathroom to take a shower.

After showering, I lay in bed and scrolled through my phone for a while.

Manager Wang has already replied, saying that his bank has a credit line and can open a letter of credit at any time.

AVE also replied to the email. As expected, they are a major car dealer. They said that the 30 cars would be confirmed in a few days, and all that was needed was to prepare the letter of credit as soon as possible. Once the letter of credit was in place, the cars would be shipped to the port of Los Angeles immediately.

Chen Yiran felt a little sleepy, but she still had to eat first, so she turned on her computer and prepared to order dinner.

Suddenly, Chen Yiran had an idea.

"Jasmine."

【Um? 】

What were you doing while I was asleep?

[I'm doing nothing. When you close your eyes, I can't receive visual information. I can receive auditory signals, but they're mostly your breathing and background noise—nothing useful. Also, most of my large model's reasoning functions will fail when you're asleep, but I can still perform simple memory retrieval. Before, on the plane, when we had just woken up, I retrieved memories while you were asleep.]

"That means you have seven or eight hours of downtime every day."

Pretty much. I operate based on your brain, and when you're asleep, most of my functions stop working.

Chen Yiran turned over.

"But you can still hear it and remember it? Is it possible for me to play the lesson during this time slot so you can listen to it?"

[Theoretically, it's possible, because I did receive your auditory signals during this time; however, I'm unsure how your sleep would be affected.]

"You accessed my memories a few times while I was sleeping."

[Only twice, once on a plane and once at the Super 8 Hotel, did I perform small-scale memory retrieval. I reread and rewrote your deeper memories to facilitate my access.]

"I didn't feel like I slept badly these last two times, so it seems feasible! Is there anything related to this in the medical information I've read?"

There is some medical knowledge about light and deep sleep, but it's not very in-depth. However, based on this knowledge, your idea is feasible. There's a classic experiment where subjects are given unfamiliar words and their corresponding translations while sleeping. Upon waking, although they don't remember hearing these words at all, they will subconsciously choose the correct translation during tests.

Another content creator mentioned a 2021 study showing that humans can not only receive sounds during deep sleep but also perform simple logical reasoning, and these reasoning is recorded by the brain. This aligns with the idea that I can still work while you sleep; although I can't perform complex reasoning, basic judgment and other functions are still operational.

Chen Yiran turned on her computer and opened her browser.

After thinking about it, I searched for "brain memory consolidation during sleep".

A bunch of academic articles popped up. I picked a few that I could understand.

The core content is:

Human sleep generally consists of light sleep (N1/N2), deep sleep (N3), and REM sleep, each corresponding to different brain activities.

During the N2 and deep sleep stages, the brain transfers temporary memories from the hippocampus to the cortex, transforming them into long-term memories. This process is called memory consolidation. If you learn a lot during the day, your brain automatically organizes and archives it in the background while you sleep.

Another study suggests that playing audio cues related to daytime learning content during the N2 stage can enhance this reinforcement effect. This was conducted by a laboratory in 2007.

This has potential!

Since that's the case, let's eat first. I barely exchanged a few words with Jasmine before I started getting hungry again!

Today we're eating at Papa John's, the fourth of Chen Yiran's three life-saving restaurants in Delaware!

I skillfully opened the official website, thought about the study tasks I might have during my sleep that night, and ordered a large all-meat pizza with all kinds of meat, plus an extra green pepper.

After thinking about it, I ordered a small Hawaiian pizza, which is the kind of ham and pineapple pizza that can make Italians furious on the spot.

Papa John's delivery was fast enough; it arrived in twenty minutes.

While eating, Chen Yiran chatted with Jasmine.

"You saw what I just found, right? Got it?"

[I understand. Tonight we can continue Andrew Ng's CS229 course, watch the video, and I'll take notes. However, there will definitely be some accompanying illustrations that we'll need to supplement during the day. But I've been thinking about it, and this kind of learning, where I can only take notes, is very different from what you do when you're awake during the day.]

"What do you mean? If you've taken notes, you've already learned it. Does it really matter whether I'm awake or not?"

When you're awake, I don't just record what I learn; I also use your brain to deduce and create. If there are any questions or contradictions in the lessons I learn, I can identify them. However, if I learn while you're asleep, I might only memorize and not engage in creative activities. If there are errors in the lessons I learn, I will also remember the errors, so we still need to review them during the day.

"Oh, this is a Stanford course, how could it make a mistake?"

Our goal is to create more powerful AI, the brain-computer interface of the future. We must conduct creative research and maintain a skeptical attitude towards all knowledge.

"Um, I remember reading Descartes' books, skepticism, right? Did you learn skepticism from there?"

No, this is based on scientific inference. The good news is that because the large-scale recording work is done at night, coinciding with the brain's natural processes, your body might not be as tired during the daytime simulations.

Chen Yiran picked up another slice of pizza and asked, "So, it will still speed up your learning, right? And it won't make me too tired, or cause me to oversleep every day, so I can go to school normally."

[Theoretically, that's correct. I suggest we try it today. Since you've already taken a sick day because of a cold, if you don't get up tomorrow morning, you can ask for another day because your condition hasn't improved.]

"You... alright, a day or two should be fine. It's normal to have trouble adjusting to a new environment. Here, let me find you some work."

Chen Yiran searched online and opened a TOEFL course that was playing.

Okay, this kind of course is quite simple. Just pay attention to the characteristics of the question types, etc. It's very easy and won't take up too much time.

So, Chen Yiran spent the whole evening listening to TOEFL lessons. He almost fell asleep during the session, but Jasmine reminded him that if he wanted to sleep, he should change the video.

Chen Yiran glanced at her watch; it was only 8 o'clock. After thinking for a moment, she decided to go to sleep. In case she was exhausted, going to bed early might allow her to make it to class.

I lay in bed, plugged in my laptop, and turned on the video.

At first, Chen Yiran kept his eyes open and stared at the screen, but gradually, he fell asleep in the Heavenly Book.