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Title: Political Sci-Fi
Review: This book is about political prisoners who are exiled back in time a billion years to the cambrian period in a place called Hawksbill Station. There is nothing but solid rock, no plants or animals on land, only in the sea. The story alternates between the cambrian and the present. Most of the men at Hawksbill are losing their minds because of the deprevation. I found those chapters interesting. The chapters from the present time focused on what landed the main character in Hawksbill. They aren't all that interesting, unless you like reading ca. 1960's political subversion. The writing is great, typical Silverberg, and a well told story. But I didn't like it enough to give it 5 stars.
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