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.

On the thirty-first day, B.S.D. reported to System President Mize that the inhabitants of the three planets of Argus 10 constituted no threat, that there was no military necessity for alarm, that approval of a commerce treaty was recommended, that all data was being turned over to the Bureau of Stellar Trade and Economy for analysis, that personnel of Scout Group Forty was being given sixty days' leave before reassignment.

B.S.T.E. released film to all commercial networks at once, and visions of slavering oily monsters disappeared from the imagination of mankind. The Argonauts, as they came to be called, were pleasantly similar to mankind. It was additional proof that only in the rarest instance was the life-apex on any planet in the home Galaxy an abrupt divergence from the "human" form. The homogeneousness of planet elements throughout the Galaxy made homogeneousness of life-apex almost a truism. The bipedal, oxygen-breathing vertebrate with opposing thumb seems best suited for survival.

If was evident that, with training, the average Argonaut could pass almost unnoticed in the Solar System. The flesh tones were brightly pink, like that of a sunburned human. 

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