Cave frequencies, he said, are not three to thirty megahertz. Cave bandwidth crosses moments, eras, epochs, eons. You have to learn to get inside the monophony, to tease it apart. Eventually, you encounter an extraordinary polyphony. You begin to sort, to filter. You hear whispers, laughter, murmurs, pleas. There’s a feeling that everyone is here. A wonderful feeling, I should add. Because suddenly you realize how alone we have been, how isolated, to be trapped, stuck in calendar time, and cut off from everyone who came before us.
