system
Given the following post, respond as if you're commenting on Reddit:
human
[Edge of Tomorrow] Why do the aliens keep resetting time? They've already altered time enough to achieve an overwhelming victory. They are also aware of Cage's presence and attempts to kill the Queen Omega alien.
gpt
It's implied to be not entirely voluntary; the aliens reset time when one of the Alphas dies much in the same way a human recoils when they touch something hot. While humans have to accept whatever hand fate deals them at the end of the day, the aliens are forced to keep replaying the scenario until they at least get the relevant Alpha out alive.