In the movie Tomorrow War, why do people go to the future to fight the aliens when the logical thing to do is to go in the past where their numbers are low or at the starting point?

Certainly, this is the best option, what was stopping them?

3 Answers 3


As addressed in articles such as https://screenrant.com/tomorrow-war-movie-time-travel-rules-paradox-explained/, it is explained to the recruits that the portal from the future is locked to a range of 29 years in its past. There is not an option to go to another time.

Also, so the movie can happen.


I believe the reason they did not send soldiers back initially is because making changes to the past would alter their future, erasing their timeline - where they are losing yes, but sending soldiers to the future was a way of buying time to create a viable weapon against the aliens that they could then send back. Had they began the war earlier with no effective weapon against them, it likely would have prevented humanity from having the resources or time to develop one - with no way to go to the past, as simply having awareness of the threat at that date was not enough to stop it


In the movie they explain that they were only able to hook up one worm hole to one time and even that was jury-rigged. So they didn't have the time, the technology, or the resources to create multiple worm holes.

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