"Our course."

He won't stop me, Sethos thought with determination.

"Are you someone I should know?" he asked.

"Tenth level," the mechanoid replied, whirring sedately along beside him. "I was notified five minutes ago by a circuit walker. He said he offered to radio for a vehicle, but you did not wish to return."

"That's right." Sethos was nervous now, but maintained his even step. They had gone three blocks together, and still he would not slow down.

"Tell me, Mr. Tenth," Sethos said, trying to appear calm, "do people—often walk as I'm doing?"

"No, not often." Mr. Tenth took a step across a small puddle, then resumed skating.

"What happens if I get tired of walking?"

"I can direct you to Mr. Third's office, if you won't mind. He handles such things."

"And suppose I keep going?"