Aarav yanked his hand back. His heart hammered against his ribs. He looked at the physical textbook on his desk. It was unchanged. Dead. Inert. But the PDF was alive.

The PDF was a ghost of knowledge—not a dry record of facts, but a living echo of understanding, trapped between the code and the scan of a master teacher's work.

Aarav closed the laptop. He picked up the physical, coffee-stained textbook. He opened it to a random page, and for the first time, he didn't see a monster. He saw a friend.

He should have closed the laptop. He should have gone to sleep. But the engineer in him, the part that needed to understand why , clicked forward.

Aarav closed his eyes. He didn't see the black ink on white paper. He saw the PDF. He saw the shy electrons. He placed his mental hand on the screen of his mind, believed they would move, and pulled .

The screen flickered. A soft, electric hum filled the room. On the PDF, the two carbon atoms shivered, and the double bond stretched . A lone electron, depicted as a tiny, glowing dot, detached itself and floated across the page, landing neatly on an adjacent hydrogen atom.