All day, men — no women — took the microphone and spoke. There was always a buzz in the audience, whispers, an audible hum of excitement. Then it was time for John Cage. He walked onto the stage and began to speak, without the microphone. He stood at the center of the small stage and addressed the crowd. He talked, without amplification, and soon people in the audience shouted, “We can’t hear you, use the mic. We can’t hear you.” John Cage said, “You can, if you listen.” Everyone settled down, there was no more buzz, hum or rustling, there was silence, and John Cage spoke again, without the microphone, and everyone listened and heard perfectly.