The varieties of arguments – from first rate scientists, philosophers and historians, and science fiction authors – turn out to be astonishing, entertaining, and vigorous intellectual exercises for any reader interested in science and the sheer pleasure of speculative thinking. Seventy-Five Solutions to the Fermi Paradox and the Problem of Extraterrestrial LifeGiven the fact that there are perhaps 400 billion stars in our Galaxy. Buy If the Universe Is Teeming with Aliens. Here are the doubters' arguments, from the Rare Earth theory to the author's own closely argued and cogently stated skepticism. The theories in this camp range widely, from those who believe we simply don't have the technologies to receive their signals, to those who believe the enormities of space and time work against communication, to those who believe they're hiding from us. Here are answers ranging from Leo Szilard's suggestion that they are already here, and we know them as Hungarians, to the theorists who claim that aliens built Stonehenge and the Easter Island statues. One of the things this book demonstrates, as others have before (see especially, Peter D. Presents a detailed discussion of the 50 most cogent and intriguing answers to Fermi's famous question, divided into three distinct groups. The unfortunate aspect of If the Universe is Teeming with Aliens is that it goes for breadth, rather than depth the author is quick to dismiss theories that he personally finds ludicrous and all the quotations that begin each solution come off as more unnecessarily pretentious, rather than insightful or helpful.
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