Robert Silverberg confronts the paradoxes of time travel in a brilliant new novel of the 25th century, when the only escape from suffocation in a totally controlled enviroment is to "hop" backward through time.
Since time hopping rearranges the past on which the structure of current existenceis based, it must be stopped-but not too quickly. For the history of the 1970's includes the arrival of hoppers who have not yet left hte 2490's - and whose departure thus must not be stopped!
"A complex, unpredictable plot...thought-provoking and throughly enjoyable."
Since time hopping rearranges the past on which the structure of current existenceis based, it must be stopped-but not too quickly. For the history of the 1970's includes the arrival of hoppers who have not yet left hte 2490's - and whose departure thus must not be stopped!
"A complex, unpredictable plot...thought-provoking and throughly enjoyable."
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