That’s how a performance avoids being a “lonely clown” and becomes a shared cultural experience.… Every year in Tokyo’s Shibuya district, a group of performance artists called Signal Corps organized what they called the Marathon of Signs — a public procession that blurred protest, art, and social commentary. This year, however, things were different. The theme was “Real Signals vs. Noise” — a response to an age dominated by AI-generated content, viral misinformation, and the collision of human expression with algorithmic amplification. Act I — The Empty Megaphone On an overcast Sunday, the Signal Corps assembled at Shibuya Crossing, each member wearing a mask stylized like a QR code. The lead performer, Akira, stepped forward with a gigantic megaphone mounted on wheels. He raised the megaphone and… said nothing. Pedestrians paused. Some laughed, some took videos, others scanned the QR codes on the masks. But when people scanned ...