Warning: Bad math pun! You've probably heard of Henry David Thoreau. But have you heard the story of how he died? He was in his bedroom, listening to music. The specific piece he was listening to was a Bach fugue, Fuga ala 3 Voci. He was old and frail, and his heart wasn't that great. So when the music reached a climactic point, and then dropped off suddenly, he had a heart attack and died. His exact death was at the moment of a very long, sustained pause in the piece. That measure of the piece …