Board Thread:Spoilers!/@comment-1916997-20151016201626/@comment-26116863-20151018023543

When Emma went to see him, wasn't that an alternative timeline? If you think about his power as being able to see straight ahead of his own timeline, then it makes sense that have wouldn't be able to forsee any divergence from the original caused by someone going back in time and changing things. He could foresee his timeline as it was when he gained the power.