It says in the fellowship of the ring that Sauron learned that the One Ring was still in existence, partially from Gollum.
Nej, det här är inte korrekt.
Han lärde sig från Gollum att han en gång hade en ring -
After the creature Gollum, who had previously possessed the ring, was captured, Sauron had him tortured and learned that he once had a magic ring, and from him he heard the words Shire and Baggins. He deduced that Gollum's ring was the One Ring, and sent his servants the Nine to find Shire and search for Baggins, so that the One Ring might be found and brought back to him.
Källa
Han drog slutsatsen att Gollums ring var En ring .
Det är helt annorlunda än att lära att One Ring fortfarande existerade.
Om En ring hade förstörts skulle Sauron ha förstörts med den. Det faktum att Sauron inte förstördes innebär att den enda ringen fortfarande existerade (och Sauron visste att den fortfarande fanns) men visste inte vart den var eller vem som ägde den.
One Ring Timeline
Second Age 1500, Celebrimbor forges the 16 rings under the instruction of Annatar, who is Sauron in disguise.
Second Age 1600, Sauron forges the One Ring to rule all the others.
Second Age 1700, Gil-galad and Tar-Minastrir destroy Saurons army forcing him back to Mordor to regroup.
Second Age 3261, Ar-Pharazôn, the last of the Kings of Númenor, do battle with Sauron in contention of his self-proclaimed title of Overlord of Middle-Earth. Sauron is defeated and captured but through the use of the One Ring is able to turn the Númenóreans against Valar and towards worship of Melkor and human sacrifice.
Second Age 3429, Although Sauron's body is destroyed in the Fall of Númenor, his spirt was able to bear the One Ring back to middle earth and he wielded it in his renewed war against the Last Alliance of Elves and Men. The One Ring is cut from Saurons hand by Isilidur.
Third Age 2, Isildur loses the ring in the River Anduin just before he is killed by an orc ambush.
Det är vid denna tidpunkt som Gandalf föreslår i Ringets sammanslutning som Sauron anser att den ena ringen förstörs. Observera att det finns nästan 2400 år mellan den enda ringen som försvinner och Déagol hittar den i floden Gladden.
Third Age 2430, Déagol finds the ring in the River Gladden, a tributary of the Anduin and is killed by Sméagol for it.
Observera att Sméagol / Gollum äger One Ring i nästan 500 år innan Bilbo finner det. Sauron är fullt medveten om sin existens under den här tiden.
Third Age 2941, Bilbo finds the One Ring.
Lägg märke till hur Bilbo bara har One Ring i ca 60 år.
Third Age 3001, Bilbo hands the One Ring to Frodo.
Third Age 3018, Sméagol dies in Mount Doom and the One Ring is destroyed.