Behavior: Rorschach in Space

When Astronomers Frank Drake and Carl Sagan conceived the idea of attaching a drawing of a nude man and woman to the Pioneer 10 spacecraft, their motive was purely scientific. They wanted any extraterrestrial beings who might some day intercept the craft to know what kind of race had sent it. Since the March launch, however, the two scientists have discovered that the drawing is more than a message to outer space. "We didn't realize it," says Drake, "but it turns out to be a cleverly disguised Rorschach inkblot test."

In the Rorschach, people...

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