1

Over all seven seasons of Voyager, the Starfleet of the 29th century intervened whenever anything was in the wrong time. But why don't they do this when Janeway travels back in time at the end of Voyager in order to change the whole future?

marked as duplicate by Valorum star-trek Apr 26 '18 at 21:43

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.