Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

The 1977 movie Close Encounters of the Third Kind is truly iconic, and one of my all time favorites. But there is one thing I am curious about.  During the climax, we see the aliens returning many people to the Earth. Most of them look like they are from a time far behind. Also, the other things that the aliens return during the movie are all very old things (taken a long time ago) eg.- Airplanes in Mexico, a ship in Mongolia. However there is one exception -- the 3 year old kid -- Barry, who is taken away by the aliens and returned back soon thereafter (at the end of the movie).  How did this happen? What could be the reason for this exceptional behavior of aliens?
Why did the aliens return Barry so soon, in 'Close Encounters of the Third Kind'?

This question is about the two-oscar winning movie Great Gastby (2013) that was co-written and directed by Baz Luhrmann.   Only after I had seen this extraordinary movie and found out that F. Scott Fitzgerald's greatest work "The Great Gastby" has been translated into a film five times did I decide to finally read the novel.  But the novel story turned out to be very different.  Tobey Maguire played Nick Carraway as a guileless heterosexual, but in the novel, his sexuality's a bit ambiguous:    "Come to lunch someday," [Mr. McKee] suggested, as we groaned down in the elevator.    "Where?"     "Anywhere."     "Keep your hands off the lever," snapped the elevator boy.     "I beg your pardon," said Mr. McKee with dignity, "I didn't know I was touching it."    "All right," I agreed, "I'll be glad to."    . . . I was standing beside his bed and he was sitting up between the sheets, clad in his underwear, with a great portfolio in his hands.   Why would the great author Francis Scott Key Fitzgerald bother to include this strange passage, silly Nick in bed with the feminine Mr. McKee in his underwear at 3AM? If not to show some signs of Nick's sexual orientation, what other purpose could it possibly serve?   In the book, Nick meets Mr. McKee at a party and goes home with him. In the film, director Luhrmann made him go to the party, and made him ending up cuddling (or most likely) having sex with a woman.   Furthermore, in the movie, Nick is first attracted to Gatsby's parties by a glimpse of a lovely young woman. He seemed visibly affected by the sensuality of Myrtle Wilson. In the book, he recognizes her appeal, but showed revulsion and profound disapproval; later he was sneering at her "artificial laughter."  The film decided to erase the hints of Nick's gayness and I feel violated.   Not forgetting the feeling of excitement and mystery language when Nick met his wealthy neighbor Gatsby for the first time. He fell in love in first sight.    He smiled understandingly — much more than understandingly. It was one  of those rare smiles with a quality of eternal reassurance in it, that  you might come across four or five times in your life. It faced — or  seemed to face — the whole external world for an instant, and then  concentrated on you with an irresistible prejudice in your favor. It  understood you just as far as you wanted to be understood, believed in  you as you would like to believe in yourself, and assured you that it  had precisely the impression of you that, at your best, you hoped to  convey.     Nick wandered with vapid wonder in his smile. Nick loves Gatsby. He's obsessed with him: his hopes, his personality, his wealth, his life, his parties, his education, his aspiration, his true love for Daisy. He becomes so entangled in Gatsby's story because he is just too in love to have a life of his own.  Nick wanted us to believe, as he does, that Gatsby is different, that     only… the man who gives his name to his book, was exempt from [his]  reaction   of scorn because of Jay's     extraordinary gift for hope, a romantic readiness such that I have  never found in any other person and which it is not likely I shall  ever find again.   In other words, he just said “I loved this man.”  I feel cheated, because one important thing is how Nick's sexuality affects what we are reading. If Nick is in love with Gatsby—and this seems pretty clear—then the entire novel operates as a rationalization of that misplaced love (unlike what is pictured in the movie). Probably, Nick romanticized Gatsby in the exact same way that Gatsby romanticized Daisy.   So why did this director Baz Luhrmann hide that? The film, in robbing him of his homosexuality (or bisexuality), also robs him of his reserve, and not coincidentally, of his intelligence. Expecting a more intelligent answer than in 2013, gay content is controversial, and gay characters can be hard for a lot of people to accept.. We're not in the 19th century anymore and there is no gay content anyway, just some signs of the gayness from the book. In the book he wasn't a gay character, there was some signs, why were they masked?
Why did the Great Gasby (2013) movie erase the hints of Nick Carraway's homosexuality?

In Wall-E, when EVE returns a little plant back to the spaceship, a plan is shown telling humans to go back to Earth.  How can they know Earth is safe based on one little plant? Can one plant represent that an environment is healthy and safe?

How can the Axiom computer know Earth is safe based on the one little plant EVE found?