It will certainly show what our ancestors would be thinking if they were alive today. People have often speculated about this. Would they approve of modern society, they ask, would they marvel at present-day achievements? And of course this misses a fundamental point. What our ancestors would really be thinking, if they were alive today, is: 'Why is it so dark in here?'

In the cool of the river valley dawn the high priest Dios opened his eyes. He didn't sleep these days. He couldn't remember when he last slept. Sleep was too close to the other thing and, anyway, he didn't seem to need it. Just lying down was enough — at least, just lying down here. The fatigue poisons dwindled away, like everything else. For a while.

Long enough, anyway.

He swung his legs off the slab in the little chamber. With barely a conscious prompting from his brain his right hand grasped the snake-entwined staff of office. He paused to make another mark on the wall, pulled his robe around him and stepped smartly down the sloping passage and out into the sunlight, the words of the Invocation of the New Sun already lining up in his mind. The night was forgotten, the day was ahead. There was much careful advice and guidance to be given, and Dios existed only to serve.

Dios didn't have the oddest bedroom in the world. It was just the oddest bedroom anyone has ever walked out of.

And the sun toiled across the sky.

Many people have wondered why. Some people think a giant dung beetle pushes it. As explanations go it lacks a certain technical edge, and has the added drawback that, as certain circumstances may reveal, it is possibly correct.

It reached sundown without anything particularly unpleasant happening to it

It was a full-length mirror. All assassins had a full-length mirror in their rooms, because it would be a terrible insult to anyone to kill them when you were badly dressed.