FairMormon is a non-profit organization dedicated to providing well-documented answers to criticisms of LDS doctrine, belief and practice.
Fonte:D. Todd Christofferson:Apr 2012:deve-se lembrar que nem toda declaração feita por um passado líder da Igreja ou no presente constitui necessariamente doutrina
D. Todd Christofferson (Apr 2012): "it should be remembered that not every statement made by a Church leader past or present necessarily constitutes doctrine"
The President of the Church may announce or interpret doctrines based on revelation to him. Doctrinal exposition may also come through the combined council of the First Presidency and Quorum of the Twelve Apostles. Council deliberations will often include a weighing of canonized scriptures, the teachings of Church leaders, and past practice. But in the end, just as in the New Testament church, the objective is not simply consensus among council members, but revelation from God. It is a process involving both reason and faith for obtaining the mind and will of the Lord.
At the same time it should be remembered that not every statement made by a Church leader past or present necessarily constitutes doctrine. It is commonly understood in the church that a statement made by one leader on a single occasion often represents a personal, though well considered, opinion not meant to be official or binding for the whole Church. The Prophet Joseph Smith taught that a prophet is a prophet only when he is acting as such. —(Clique aqui para continuar) 
- D. Todd Christofferson, "The Doctrine of Christ," April 2012 General Conference, Sunday Morning Session (1 Apr 2012)