ROBERT SILVERBERG confronts the paradoxes of time travel in a brilliant novel of the 25th century, when the only escape from suffocation in a totally controlled environment is to hop backward through time.
Since time hopping rearranges the past on which the structure of current existence is 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 the 2490’s – and whose departure thus must not be stopped!
Since time hopping rearranges the past on which the structure of current existence is 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 the 2490’s – and whose departure thus must not be stopped!
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