Board Thread:Lore Discussion/@comment-121.217.164.118-20130929050443/@comment-86.198.155.157-20140429092457

The ancient nords could not travel in time. True they did send Alduin forward in time but only because Alduin, as a Dov, is bound to time. They actually casted him out of time but he came back (him being the eldest son of Akatosh). As for the last living Dwemer, he was outside of Mundi when his race disappeared so he wasn't affected by whatever affected the Dwemer which leads us to the hypothesis that whatever it was only affected one reality. Which is quite logical when you think about it, they used the heart of Lorkhan, the Aedra that orchastrated the creation of the universe and is the very core (the heart) of reality..