Of course it’s the apparently tranquil periods that deceive us. Though our instruments or our senses or our wits may not be able to see the processes that are leading toward these clusters of events, they’re happening. The star, the wheel, the butterfly—all are in a subtle state of unrest, waiting for the moment when some invisible mechanism signals that the time has come. Then the star explodes; the wheel makes poor men rich; the butterfly mates and dies.