
are able to set things back on the utopian path, humanity’s great hero, warp-drive inventor Zefrem Cochrane, knows that his discovery and fateful voyage were part of a conflict between two mysterious powers from the future. A completely unpredictable force, which at that point in history humanity had had no dealings with, blasts out of the future and takes over - and while Captain Picard et al. The new element in First Contact is the malevolent intention of the Borg in disrupting our timeline.

Even if Voyage Home marks a shift, it’s still within the same basic frame of rehabilitating our own accidental behavior in the past. That emphasis on future greatness continues even in Star Trek IV: The Voyage Home, whose somewhat contrived plot centers on the hard lesson that present short-sightedness (such as letting whales go extinct) can affect the future in ways that might not even make sense to us now (such as an alien force that had befriended the whales laying waste to earth when they can’t find them). Even at great cost - as in the classic episode “City on the Edge of Forever” - the timeline that had produced the optimistic semi-utopia of Star Trek had to be restored. Previously, the emphasis was always on preserving the past, which had led to a glorious future. The film First Contact marks a decisive turning point in the Star Trek franchise’s approach to time travel.
