(Cover David Pelham)
Editor(s): Brian Aldiss
Publisher: Penguin (UK)
ISBN: 0-14-003145-6
Publication Date: 1973
The Penguin Science Fiction Omnibus 1973
Short Story
Here is a challenge-to-the-Reader story, a stimulating puzzle for you to solve: How could you prove to a wholly alien life-form that you are a rational being? To the survivors of the wrecked spaceship Lode Star it was a challenge of a more vital sort - a riddle of life or death. I doubt if any reader will soon forget Mr. Chandler's pointed answer.