The end? WTF?

I just watched the movie again a few days ago, and the way they were talking about it, I had the impression that they were both on the 1963 plane. But maybe I'm wrong.

As far as the relevance of that, I think the main reason why he was on the plane in 1963 was that Louise was there too. When he realized that was her, he connected the dots some more about what was going on. 25 years had passed for him, but for her, she was just on that flight the previous day.

Well for one thing they weren't born there. They were taking people from different times to keep repopulating because they couldn't have kids. And I didn't get the thing where he tells her she's going to have a baby. She said she couldn't have them which I interpreted as meaning that she was sterile. It was a confusing thing to put at the end.

“Honey, there’s a spider in your bathroom the size of a Buick!”--Alvy (Annie Hall/1977)

So what if she couldn't? I'm sure there were gay and other sterile people, who wouldn't or couldn't reproduce, abducted.

The people of Nod would've been Cain's relatives since Adam & Eve were the only people first on Earth.

Here's a more detailed explanation about the people of Nod:

Question: "Of whom was Cain afraid after he killed Abel?"

Answer: In Genesis 4:13-14, shortly after he killed his brother Abel, “Cain said to the LORD, ‘My punishment is more than I can bear. Today you are driving me from the land, and I will be hidden from your presence; I will be a restless wanderer on the earth, and whoever finds me will kill me.’” Whom exactly was Cain afraid of? The only people the book of Genesis had mentioned to this point are Adam and Eve (Cain’s parents) and Abel (who was now dead). Who would possibly be a threat to Cain?

It is important to recognize that Cain and Abel were both full-grown adults at the time that Cain killed Abel. Both Cain and Abel were farmers, who tended to their own lands and flocks (Genesis 4:2-4). The Bible does not tell us how old Cain and Abel were, but they very likely could have been in their 30’s or 40’s. The Bible does not specifically mention Adam and Eve having any children between Abel and Seth (Genesis 4:25). However, it is highly unlikely that the two most perfect human beings in the history of the world, Adam and Eve, would not have any children over several decades. Adam and Eve had many children after Seth (Genesis 5:4), so why would they not also have had other children between Abel and Seth? The Bible does not say that Seth was Adam and Eve’s first child, or even first son, after Abel was killed. Rather, it states that Seth was born as a “replacement” for Abel. Genesis chapter 5 traces the genealogy of Seth. Prior to his death, Abel was likely the “chosen” son that would eventually produce the Messiah (Genesis 3:15). It is in this sense that Seth “replaced” Abel.

So, whom was Cain afraid of? Cain was afraid of his own brothers, sisters, nephews, and nieces, who were already born and would be capable of seeking revenge. The fact that Cain had a wife (Genesis 4:17) is a further evidence that Adam and Eve had other children after Cain and Abel, but before Seth.

Recommended Resources: Bible Answers for Almost all Your Questions by Elmer Towns and Logos Bible Software.

There's an alternate ending on the blu-ray that shows a time portal tunnel, them landing in water (?) and then holding each other while naked during the voiceover, then it pans overhead. It probably should have been the actual ending of the film instead of the static shot of the sun.