Just out of interest, has the Star Wars Expanded Universe ever attempted to reconcile the claim made in Revenge of the Sith that Qui-Gon Jinn was the first Jedi to ever attain the ability to live on as a Force spirit after death, with the numerous instances in earlier stories set thousands of years in the past, such as Tales of the Jedi, where the bodies of dead Jedi dissolve and they become spirits in the Force?