Board Thread:Lore Discussion/@comment-13417807-20130726204600/@comment-80.216.214.210-20130918022414

http://elderscrolls.wikia.com/wiki/Dragon_Shouts;

"The  Nord  heroes  Felldir the Old ,  Gormlaith Golden-Hilt, and  Hakon One-Eye  contrive the Dragonrend shout and use it and an  Elder Scroll  to partially defeat  Alduin  by casting him adrift in time, marking the turning point in mankind's favor during the  Dragon War ."

If the "Way of the Voice" had existed back then these people never would have learned shouts and Alduin would have won.