The forest’s shade is lit by the ground and the trees now, not only by the sky. Walk into the trees on a sunny afternoon and the trunks and young conifers in shade go warm and olive instead of blue-gray, and the forest floor is a touch brighter. It runs a little faster than before, not slower.

The light from the sky stays where it was, because turning it down only sank the shade toward black. More detailed shadows were built and stayed switched off until October 25; the crash that kept them off was traced and fixed on November 4.