Again I do not like the time travel episodes. This one had decent fighting/combat scenes, which I normally have a problem with. Again with the time travel. Why does this show insist on putting this stupid concept at the center of the entire series? There is no way for time travel to work unless it has worked in the past, which means that it really doesn't matter what we do because it has already happened. My thoughts are that even if the crew didn't stop these aliens, the timeline can't change from the way it was/is/will be. Stop with the time traveling people!!!
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