Klaus nodded. He’d felt it from his apartment across the river. A low thrum in his molars, a flutter in his peripheral vision. The in Multiprog stood for Wellen-Technik —Wave Technology. But the engineers who founded the place in 1978 had meant something more than radio frequencies.

And in the basement of Multiprog WT, the pain wave began to rise.

“Nein,” Klaus said, but his voice was weak. Because the hum was changing. It was synchronizing with his own heartbeat. He felt his own old pains—the divorce, the daughter who wouldn’t speak to him, the layoff notice from 2024—liquefy and flow into the machine’s logic.