The chip is faster than thought. It responds before Illyan is aware he'd asked a question, and the hardest thing to learn is how to stop. Stop thinking. Stop asking. Start choosing.
He's the only one who learns to control the chip. The only one who can close his eyes, access his chip, and then stop. The chip always responds. It was designed to replace a brain, not augment it, but Illyan teaches it to submit, to provide data and never become reality.
The chip always tells the truth, but Illyan knows how to lie. And he is in control.