What was delaying the Duncan?

Leto imagined the man vacillating, staring out a window across the fluid horizon of the Sareer. The air was alive with heat today. Before descending to the crypt, Leto had seen a mirage in the southwest. The heat-mirror tipped and flashed an image across the sand, showing him a band of Museum Fremen trudging past a Display Sietch for the edification of tourists.

It was cool in the crypt, always cool, the illumination always low. Tunnel spokes were dark holes sloping upward and downward in gentle gradients to accommodate the Royal Cart. Some tunnels extended beyond false walls for many kilometers, passages Leto had created for himself with lxian tools-feeding tunnels and secret ways.

As he contemplated the coming interview, a sense of nervousness began to grow in Leto. He found this an interesting emotion, one he had been known to enjoy. Leto knew that he had grown reasonably fond of the current Duncan. There was a reservoir of hope in Leto that the man would survive the coming interview. Sometimes they did. There was little likelihood the Duncan posed a mortal threat, although this had to be left to such chance as existed. Leto had tried to explain this to one of the earlier Duncans... right here in this room.

"You will think it strange that, with my powers, can speak of luck and chance," Leto had said.

The Duncan had been angry. "You leave nothing to chance! I know you!"

"How naive. Chance is the nature of our universe."

"Not chance! Mischief. And you're the author of mischief!"

"Excellent, Duncan! Mischief is a most profound pleasure. It's in the ways we deal with mischief that we sharpen creativity."

"You're not even human anymore!" Oh, how angry the Duncan had been.

Leto had found his accusation irritating, like a grain of sand in an eye. He held onto the remnants of his once-human self with a grimness which could not be denied, although irritation was the closest he could come to anger.