I think there's something wrong in the X-Men movies.
In X-Men: First Class, Charles Xavier is paralysed and loses control of his legs even before he starts the school for gifted youngsters.
In X-Men Origins: Wolverine, at the end of the movie, he is seen walking towards young Scott and talking to him via his mind.
Then, in X-Men: The Last Stand, it flashes back 20 years, and you see the grown-up Xavier and Magneto, friends, talking to a young Jean Grey.
This is a total contradiction right?