Text complete: one never came in or went out by the same route , and one rode in a different sort of sealed and windowless vehicle each time one arrived or departed . nor did one journey to or from depot ever take anything like the same amount of time as the one before it or the one after . as sophon-06 had observed , the new law robots invested a great deal of effort in order to stay hidden . gubber therefore paid no attention to the journey back and forth to
depot