How does LDS handle doctrine changes? Starting from this question, I'm curious how the LDS church handles the doctrine changes.

I saw a similar question (What is the LDS position on changing doctrine), but what I'm wondering is how this works in practice:


Let's assume a new idea comes. Who validates that the new idea is right or wrong? Is there a vote?
Where are these changes published?
What are some examples of doctrine changes? I expect to see them reflected in the archives of the conferences (or other official archives).
Let's assume a new idea comes. Who validates that the new idea is right or wrong? Is there a vote?


Doctrine comes today as it did anciently-through divine revelations to prophets.1

Revelation may come by:


His own person
His own voice
The voice of the Holy Ghost
Messenger (Moses, Elias, and Elijah)


Revelation [for the church] may come to:


The President of the Church individually
Prophets acting in Council



  Where are these changes published?


Modern doctrine can be found:


  ...in the four “standard works” of scripture (the Holy Bible, the Book of Mormon, the Doctrine and Covenants and the Pearl of Great Price), official declarations and proclamations2,3, and the Articles of Faith.4 cite-not AoF


Mormonnewsroom will publish any official statements the LDS church makes. These statements are also commonly read in ward (local congregations) meetings. These are not doctrine changes but: official church stances, policies, practices, and/or warnings about certain matters that arise in modern times.


  What are some examples of doctrine changes? I expect to see them reflected in the archives of the conferences (or other official archives).



Word of Wisdom(1833) -the Lord revealed which foods are good for us to eat and which substances are not good for the human body.
Official Declaration 1(1890) -led to the end of the practice of plural marriage in the Church.
Official Declaration 2(1978) -removed all restrictions with regard to race that once applied to the priesthood.




Joseph Smith said: 


  The fundamental principles of our religion are the testimony of the Apostles and Prophets, concerning Jesus Christ, that He died, was buried, and rose again the third day, and ascended into heaven; and all other things which pertain to our religion are only appendages to it.


(Some doctrine is more important than others...there has not been many major doctrine changes within the LDS church since it has been restored.)4

1 https://www.lds.org/ensign/2013/09/how-is-doctrine-established?lang=eng

2 http://eom.byu.edu/index.php/Proclamations_of_the_First_Presidency_and_the_Quorum_of_the_Twelve_Apostles the 4th one is available to watch https://www.lds.org/general-conference/1980/04/media/session_4_talk_2/2819783447001?lang=eng the first 3 are before the invention of TV

3 https://www.lds.org/topics/family-proclamation?lang=eng&amp;old=true

4 https://www.mormonnewsroom.org/ldsnewsroom/eng/commentary/approaching-mormon-doctrine