Early SETI efforts were marked by overly optimistic estimates of the probable number of extraterrestrial civilizations in our galaxy. In light of new findings and insights, it seems appropriate to put excessive euphoria to rest and to take a more down-to-earth view. Earth may be more special, and intelligence much rarer, in the universe than previously thought.

Skeptical Inquirer Volume 30.3, May / June 2006

Peter Schenkel