Release Message:  In principle, time travel could have been used as a means of instantaneous travel, but that would have involved the traveler being in two places at the same time, at least for a split second; fearing a time paradox, such use of the device was strictly forbidden. Written by John Brunner.

Description:  In principle, time travel could have been used as a means of instantaneous travel, but that would have involved the traveler being in two places at the same time, at least for a split second; fearing a time paradox, such use of the device was strictly forbidden.