The university library’s Wi-Fi, like most things in the physics department, was unreliable.

“The PDF won’t load,” she muttered. “It’s the whole chapter on sidespin-induced throw . If I lose it, my grant defense is dead.”

But she smiled. Because now she understood: the PDF was just the map. The table was the territory.

“Your paper is probably brilliant, Professor. But remember: the physics of billiards isn’t in the file. It’s in the click. The moment the two balls touch, they don’t care about your math. They just obey.”

“You write about ‘kinetic friction’ and ‘normal force,’” he said, never taking his eyes off the balls. “But you forget the ghost.”

Leo shuffled closer. He glanced at the screen, then at the pristine, unused billiards table in the corner of the faculty lounge. The university kept it for “alumni relations,” but no one ever played.