Zelda 64 : Is the ending seriously messed up or perfectly logical?
By: Steven Michael Shon

I'm looking through the Articles section of this site, and I see an article about someone trying to make sense of the Zelda 64 ending. I don't think he really DID find a way to make it make sense. So now, I'll take a shot at it.
My assumptions:
   
The time travel activated by inserting the Master Sword into the Pedestal of Time takes Link back EXACTLY 7 years. Therefore, if kid Link plunges the Master sword into the Pedestal of Time at 12:00, and pends half an hour as adult Link before going back to being kid Link at 12:30, the magic will take him back precisely 7 years, regardless of departure time, so that when he arrives, he will arrive at 12:30.
 
The Sages didn't just banish Ganon in their time period. Notice how as he's cursing the Sages, Zelda, and Link, he's a normal Gerudo male again, not some hideous monster created from Gannondorf, King of the Gerudos, by the power of the Triforce of Power. They banished him from a good chunk of the time line (I would say maybe seven years or more before the Sages actually banished him), changing history. Instead of him taking over Hyrule, he had already been banished to the other Realm at the time when he was supposed to have taken over Hyrule Castle Town, the castle, and sent his monsters to terrorize the races of Hyrule that had tried to keep him from winning Hyrule over in the first place.
 
Therefore...
 
When Zelda returned Link to being a kid, she sent him seven years back Link arrived after the Door of Time was opened, and when Gannondorf had disappeared into the Sacred Realm, when everything was fine.
 
In MY mind, this is perfectly reasonable...but it could just as easily be complete garbage, without my knowing it. Decide for yourself...