Mormons believe humans, demons, angels, fallen angels and deity are the same species.

It's funny all the changes in the Book of Mormon when asked why the change? they plead ignorance. In the end they put on this air of false humility, pleading ignorance.

What is true today in Mormonism was often not true in earlier Mormonism, and may yet change again. Mormonism is constantly changing, not in keeping with the same principles, but directly contradicting itself. It's as though Mormonism didn't have a conscience to realize their sinful ideas before, but as their consciences' keep pricking at them they have to make changes such as allowing blacks to enter in the Temple now. They came to realize no black person has ever become white and delightsome so there must be something wrong with this teaching.