Argument:

CJCLDS officially says history of official doctrine is consistant. Yet the the church ended the "black advancement policy".

Reason for fallacy:

Doctrine inherent within official CJCLDS texts gives doctrine declaration rights only to: 1. The President of the Church; 2. A unanimous vote of the Quorum of the 12; Etc -- any other unanimous vote of all seperate quorums of a type.

The official "black" policy was actually based on writings of Brigham Young, while not the president of the church. He theorized within these writings that African-Americans were decendents of Cain (the cursed murderer of Abel). Aside from any contradictions with other doctrine (Cain's decendents would have been killed in the CJCLDS's informally accepted deluge), and the fact that Joseph Smith (1st president of the church) had never allowed such a policy, Brigham Young did not even have the "authority" to officially declare doctrine at the time of those writings.

Church President Spencer Kimbal, when altering the "black" policy, said the reason it had never been abandoned at an earlier date was because no president had ever asked God concerning the subject.