Gone

Many words are used in different ways depending on how it is said in a conversation. When a person leaves a room to go somewhere else, the people in the room may say that the person is gone after they left. A different way “gone” may be used is if there is an extremely drunk person to the stage that they do not know what the difference between right and wrong is, the person may be considered “gone”. If a person died, to make it not sound so bad, someone might say, “She has gone to a better place.”
As a person hears the phrase “going once, going twice, gone!” at an auction, it is meaning that the option of purchasing the object for a higher price is going away quickly. A phrase a person may hear the night after a college party is, “that guy at the party last night was completely gone.” Gone in this sense is being completely drunk or high.
The Oxford English Dictionary defines gone as someone who has passed on or who is dead, not here anymore, or unavailable. The Urban Dictionary defines gone as something that is not here anymore, someone who is dead, and is also a word describing a person who is extremely drunk or extremely high. These two different sources which give similar but different definitions are both correct.
They are each correct depending on the text which a person chooses to use this word in. The authorities of the Oxford English Dictionary are scholars which choose to put this word into the dictionary. The authorities of the Urban Dictionary are just random people who have different meanings and different ways they can use the word “gone”.
The Urban Dictionary and the Oxford English Dictionary are both considered a prescriptive authority because they are telling the reader how the word is used.