Grokking The System Design Interview

I have always had an almost pathological sense of paranoia. Ever since I was a child, I was convinced that the people around me were out to get me. Back in elementary school, when everyone was lining up for their student ID photos, I flatly refused to have mine taken. I insisted that the district office was going to use my picture for identity theft. The situation escalated so badly that the principal had to personally sit me down and spend half an hour trying to convince me otherwise. Then, there was the fingerprint registration system in middle school. The school required every student to submit their fingerprints to access the campus buildings. I was so terrified that someone would steal my biometric data that I literally rubbed the skin off all ten fingertips to make them unreadable. Even when my fingers were bleeding, I kept shouting that they were trying to steal my identity. I would rather climb over the school fence every day than cooperate. Every relative I had called me crazy. My parents were so fed up that they seriously considered having me admitted to a psychiatric hospital. I did not care. I guarded my privacy with obsessive determination, gritting my teeth and holding my ground all the way up to the eve of the final exams. Then came the day before the exam. That afternoon, our homeroom teacher, Tracy Collins, walked into the classroom carrying a metal lockbox. A warm, motherly smile spread across her face as she set it down on the desk. "Everyone," she said, "to make sure nobody forgets their documents tomorrow, I'd like you to hand over your IDs and exam admission slips for safekeeping tonight." She patted the lockbox reassuringly. "Tomorrow morning, I'll personally return them to each of you outside the testing center. This way, there's absolutely nothing that can go wrong." The class was deeply moved by her thoughtfulness. Some students even looked close to tears as they eagerly pulled out their documents and lined up to hand them over. Everyone except me. My hand clamped down over my pocket so tightly that my knuckles turned white. Cold sweat poured down my back. A sharp alarm bell was ringing in my head. Trying not to attract attention, I fished out a spare flip phone from my bag, ducked beneath my desk, and dialed emergency services. As soon as the call connected, I lowered my voice and spoke into the receiver. "Hello. I'd like to report a crime. My name is Charles. "I believe a teacher at St. Alden High is working with an identity-fraud ring and is planning a large-scale operation tonight involving examination fraud and identity theft."

On the day Clara forced me to sign the divorce papers, I got bound to a self-sabotaging system. The system commanded me to slap her hard and tell her to get lost. I trembled in fear because Clara was a ruthless person. If I dared to stop her from getting back together with the love of her life, she would utterly destroy me. But the system threatened me: "If you don't self-sabotage, you will die soon." Left with no choice, I slapped her. As soon as I hit her, I ran out of the house, terrified. The system then told me to smash a police car on the side of the road. I suspected the system wanted me dead. However, after I smashed the police car's side view mirror, I realized that the system was trying to sabotage someone else's life instead.

After I secured early admission to one of the country's most prestigious universities, my old high school invited me back to sit for the State Scholars Exam and compete for the top statewide score. But just ten minutes into the math paper, the proctor out of nowhere accused me of cheating. "Everyone else starts with the multiple-choice section. You went straight for the proofs. Were you planning to copy someone else's answers later?" Before I could explain a single word, he dragged me into the boys' restroom. Not only was I humiliated and forced to strip, I also had to let him inspect me over and over again to confirm that I had no cheating devices on my body. After I returned to the exam room, I decided it was better not to cause more trouble, so I started from the multiple-choice section like everyone else. But less than five minutes after I sat down, he yanked me up again. "This is even more fake. You didn't even take time to read or think through the questions before writing down the options. If that isn't cheating, what is?" "I suspect you knew the answers in advance. I'm reporting this to the exam board right now and having your exam qualification revoked!"

The HR manager slid a severance agreement across the table and said coldly, "You're fired." I froze. "Why?" Just one week ago, my boss had praised me in the company meeting and called me one of the team's most valuable people. The HR manager shrugged. "Ms. Lyttle, you're already 35. You don't have the energy of younger employees anymore, and you're not what you used to be. You no longer fit the company's future." I joined this company when I was 29. Over the past six years, I wrote countless lines of code and worked through more sleepless nights than I could remember. Every time the company faced a major system failure, I led the emergency response and saved it from catastrophic losses. And now they were telling me I was too old and too slow. I laughed in disbelief. "So you've already copied all my experience and skills into an AI, haven't you?" The HR manager paused for a moment before answering confidently, "AI never gets tired, never takes time off, and never asks for a raise. Once the company has an employee like that, why would we keep you?" I looked at her. "Are you sure the AI has learned everything I know?" She smiled. "Absolutely." The moment I heard that, I finally relaxed. Long ago, I had already hidden a trap inside my code to keep my skills from being copied. The moment their AI employee went live, the company would only have three days before everything fell apart.

She is neither the protagonist nor the antagonist in this game. She’s the hand that control and move the pieces on the board. Humans are her chess pieces, and the school is her chess board. This is her game. Join Mal Pandora on her twisted game as she slowly reveals the dark truth behind the system, and witness how she plays the game mischievously. Be prepared to see how she deceives them with her plan and tricks, and how she can turn the tables even in the worst of circumstances. This is a mind game involving strategy and deception, and all she asks of you is that you trust her. The question is... Will you trust her as she plays THE SCHEME?

The college entrance exam began, and I waited nervously for the papers to be handed out. Just as I was about to take the test paper from the invigilator, a floating line of text suddenly drifted across my vision. [Don't take it. The paper is coated with deadly poison. You'll die the moment you touch it.] Before my mind could even process what was happening, pure survival instinct made my hand jerk back. The paper slipped from my grasp and fell to the ground. I stiffly met with the invigilator's lifeless, mechanical eyes. He stared at me without blinking, then slowly bent down, picked up the test paper, flipped it over, and placed it back on my desk. "Good luck on your exam." His cold voice snapped me out of the fear brought on by that strange message. Just as I was starting to think that it was nothing more than nerves playing tricks on my eyes, the exam hall speakers started playing instructions. "The listening test will now begin. Please mark your answers on the corresponding answer sheet. The papers will be collected in 15 minutes. Anyone who fails to submit on time will be eliminated!" A wave of terror instantly overwhelmed me.