Common Denominator

BY JOHN D. MacDONALD

Illustrated by DON HUNTER

[Transcriber's Note: This etext was produced from
Galaxy Science Fiction July 1951.
Extensive research did not uncover any evidence that
the U.S. copyright on this publication was renewed.]


Advanced races generally are eager to share their knowledge
with primitive ones. In this case ... with Earthmen!


When Scout Group Forty flickered back across half the Galaxy with a complete culture study of a Class Seven civilization on three planets of Argus Ten, the Bureau of Stellar Defense had, of course, a priority claim on all data. Class Sevens were rare and of high potential danger, so all personnel of Group Forty were placed in tight quarantine during the thirty days required for a detailed analysis of the thousands of film spools.

News of the contact leaked out and professional alarmists predicted dire things on the news screens of the three home planets of Sol. A retired admiral of the Space Navy published an article in which he stated bitterly that the fleet had been weakened by twenty years of softness in high places.